BCS Business Analysis Pre-Course Reading.pdf

BAFOUND-PCR_V2.4

Business Analysis Foundation Pre Course reading

Business Analysis Foundation BAFOUND-PCR_v2.4

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Business Analysis Pre-Course Reading

1. Business Analysis covers a very broad range of subject areas and skills. The Foundation Certificate in Business Analysis expects us to understand this broad range and will test our understanding of a wide range of subject areas.

2. The syllabus (v3.3) is arranged as follows and the course you are about to

undertake will have a similar emphasis:

What is Business Analysis (2.5%) The competencies of a Business Analyst (2.5%) Strategy Analysis (7.5%) The Business Analysis Process Model (5%) Investigation Techniques (15%) Stakeholder Analysis and Management (5%)

Modelling Business Systems (10%) Modelling Business Processes (10%) Gathering the Requirements (7.5%) Documenting and Managing Requirements (5%) Modelling Requirements (10%) Delivering the Requirements (5%) Making a Business & Financial Case (10%) Implementing Business Change (5%)

3. Although there are no formal pre-requisites to entry into the course, delegates who have either an IT background, perhaps in systems design & development, or have a basic understanding of the process management environment will be at significant advantage.

4. Most courses will have a mix of experienced and less-experienced managers, and similarly IT staff with more or less experience of the Business Analysis environment. This provides a forum for lively debate and learning.

5. To assist understanding, BEFORE the course commences QA expects all delegates to have read the pre-course reading document which is an extract from the BCS textbook Business Analysis Second Edition edited by Debra Paul, Donald Yeates and James Cadle. The book will be given to you on day 1 of the course.

Business Analysis Foundation BAFOUND-PCR_v2.4

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THE FOUNDATION EXAMINATION

40 Multiple choice format questions. This is a one hour, "closed-book" examination where you need to score 26 marks or more to pass. The

Foundation examination will be on the afternoon of Day 3 and your paper will be independently invigilated and marked by BCS.

BCS ACCREDITED TRAINING PROVIDER

QA as an Accredited Training Provider is responsible for design and creation of

the Business Analysis courseware and the delivery of the training, and although

QA administer the examinations, all questions will have been approved by BCS.

PLEASE REMEMBER TO BRING YOUR PRECOURSE MATERIALS WITH YOU

WE LOOK FORWARD TO WELCOMING YOU ON YOUR BUSINESS ANALYSIS

COURSE

1 What is Business Analysis?

pcr_01_introduction to business analysis.docx Page 3

1.1 What are the origins of Business Analysis?

Technology developments have enabled organisations to implement new business

models and focus on their core processes and competencies. However for many years

there has been a growing dissatisfaction in business with the support provided by IT

and recognition by senior management that IT investment often fails to deliver the

required business benefit. Business Analysis is a relatively new discipline that promises

to overcome these problems by ensuring that business needs are aligned with

implemented business change solutions.

1.2 The development of Business Analysis

Drivers include:

Outsourcing

In an effort to reduce costs, and sometimes due to a lack of IT expertise, many

organisations have outsourced their IT operations. The advantages of reduced cost

often are replaced by problems once the arrangement has been in place for a while.

Issues relating to supplier management and requirements communication occur. This

has been a catalyst for the development of the business analysis function as

organisations recognise the importance of business representation in the development

and implementation of IT systems

Competitive advantage of using IT

Organisations have discovered that for IT systems to deliver competitive advantage:

The needs of the business must drive the development of IT systems

The implementation of IT systems must be accompanied by the necessary

business changes

The IT requirements must be rigorously and accurately defined.

The first two areas required the development of the business analysis role.

Successful business change

Increasingly organisations have broadened their view from IT projects to business

change programmes. In addition the business change lifecycle was developed, and the

roles of programme manager and business change manager have been defined. The

business analyst has a role to play in the definition of requirements, change design and

development, business acceptance testing and, after implementation, benefits review

and realisation.



Importance of the business analyst role

The business analyst can help identify solutions to business issues and opportunities

which are not always provided by IT. Ensuring that predicted business benefits are

achieved is increasingly important in a global economic environment where budgets are

limited and organisations cannot afford to waste financial resources.

Use of consultants

Many organisations use consultants because:

They can be employed to deal with a specific issue on an as-needed basis

They bring a broader business perspective

They can provide an objective view of the company

However the use of consultants is often criticised because of the:

Lack of accountability

Absence of any transfer of skills

Cost



Business analysts argue that they can provide the same services as external

consultants and can operate as internal consultants with the following advantages:

Lower costs

Speed , as they are knowledgeable about the business domain

Retention of knowledge within the organisation

They will have to live with the impact of the actions they recommend.

1.3 The Scope of Business Analysis Work

Some business analysts may be required to undertake strategic analysis and identify

business transformation actions, but most will have a role to play in supporting this

activity.

IT systems analysts are responsible for analysing and specifying the IT system

requirements in sufficient detail for a system to be built or a software package

purchased. However the business analyst is responsible for considering a range of

business options to address a particular problem of opportunity. The options may, or

may, not include IT. In some organisations, where there are no systems analyst roles,

the business analyst works closely with the IT developers and so may include the

specification of the IT requirements as part of their role.

The core business analysis role is:

To investigate a business system where improvements are required

To recommend actions that would overcome a problem or achieve business

benefits

To make recommendations for business changes supported by a rigorous

business case.



1.4 Taking a holistic approach

When identifying areas for improving a business system, the business analyst must

consider all aspects of the operational business system. This is known as taking a

holistic approach, which is essential for the business to obtain business benefits.

A useful mnemonic to remember the four views of a business system is POPT.

The business analyst may be required to support the implementation of the business

change. The holistic view offers an effective structure for identifying the range of areas

to be considered when planning the implementation.

1.5 The role and responsibilities of a business analyst.

The core business analyst role definition:

An internal consultancy role that has the responsibility for investigating

business situations, identifying and evaluating options for improving

business systems, defining requirements and ensuring the effective use of

information systems in meeting the needs of the business.

In addition business analysts in a more senior or specialist role may be involved with:

Strategy implementation

Business case production

Benefits realisation

Specification of IT requirements.



Extract from

Debra Paul, Donald Yeates and James Cadle (2010), Business Analysis (2nd Edition),

BCS.

2 The competencies of a Business Analyst

2 The competencies of a Business Analyst v1 Page 8

2.1 What are the competencies that we need to develop?

Here we will define a competency as something a business analyst needs in order to

perform his or her job effectively. The competencies are grouped: Behavioural skills and

personal qualities, Business knowledge and Techniques. A useful mnemonic to

remember these groupings is BBT.

Behavioural skills and personal qualities:

Communication

Relationship building

Influencing

Team working

Political awareness here we are thinking about internal politics, the ability to

work out what is and is not politically acceptable in an organisation.

Analytical skills and critical thinking

Attention to detail

Problem solving

Leadership developing a vision, taking ownership of that vision and ensuring

actions to achieve that vision are implemented, are leadership characteristics

that apply to all types of work, including business analysis

Self-belief

Business knowledge

Finance and the economy

Business case development*

Domain knowledge the sector in which your organisation operates .e.g. private,

public, not-for-profit

Subject matter expertise

Principles of IT

Organisation Structure and design

Supplier management different contractual arrangements which are available:

o Time and materials

o Fixed price delivery

o Risk and reward

Techniques

Project management

Strategy analysis*

Stakeholder analysis and management*

2 The competencies of a Business Analyst

2 The competencies of a Business Analyst v1 Page 9

Investigation techniques*

Requirements engineering*

Business system modelling*

Business process modelling*

Data modelling*

Managing business change*

Facilitation techniques

Competencies marked above with * are covered in the course.

2.2 How can I develop my competencies?

A first step is to understand the competencies required of a business analyst in your

organisation, considering current and future requirements, then compare them to your

own skills set. There are three ways in which business analysts can develop their

competencies: training, self study and work experience.

Your organisation may use a framework such as the Skills Framework for the

Information Age (SFIA) pronounced sofia the British Computer Societys model.

SFIA and SFIA plus include six categories of skill including business change. Different

levels of skill are defined for each category and are numbered:

1 follow

2 assist

3 apply

4 enable

5 ensure, advise

6 initiate, influence

SFIAplus provides more detail than SFIA and should be treated as a standard, whereas

SFIA may be tailored to an organisations needs. SFIAplus enables organisations to

classify and benchmark their IT skills and to train and develop their teams to meet the

defined skill requirements.

The BCS International Diploma in Business Analysis is a professional qualification in

Business Analysis. The Foundation Certificate in Business Analysis which you are

taking is one of the four certificates you will need to pass, and take an oral exam, to

complete the Diploma.

Extract from


BCS.

3 Strategy Analysis

3 Strategy Analysis v1 Page 10

3.1 What is strategy?

A popular definition is given by Johnson, Scholes and Whittington (2008):

Strategy is the direction and scope of an organisation over the long term,

which achieves advantage for the organisation through its configuration of

resources within a changing environment and to fulfil stakeholder

expectations.

3.2 How is strategy developed?

We can identify several starting points:

Strategy associated with an individual e.g. Ken Morrison of Morrison

supermarkets, the founder of a business or a newly introduced manager e.g.

Stuart Rose at Marks & Spencer

Decentralised and empowered organisations where all managers are

encouraged to use the techniques of strategy analysis and be intrapreneurial or

internally entrepreneurial. Groups of manager may meet to determine strategy by

reviewing the market and their own business progress.

Strategies resulting from a formal planning process. This is essential for some

organisations; especially those for which strategy is truly long term e.g. Railtrack.

The three different ways in which strategies come about are described by Johnson,

Scholes and Whittington (2008) as seeing strategy development through three different

lenses. These lenses are:

The design lens of formal planning sees strategy resulting from detailed and

comprehensive analysis by top management, which is pushed down through the

organisation.

The experience lens (intrapreneurial) where the collective experience of the

organisation and its culture operate on existing strategy to give it a new form.

The ideas lens for entrepreneurial strategies which are the result of an

innovative climate or the introduction of new thinkers.

We also have to recognise another force in the making of strategy: politics. Rather than

strategy developed in a rational way, it is developed through the promotion of specific

ideas of the most powerful groups. This power comes from:

Dependency departments are dependent on those departments that have

control over the organisations resources e.g.HR.

Financial resources who controls the funds needed to invest in new ideas,

products or services.

Position where the individuals live in the organisational structure.

3 Strategy Analysis


Uniqueness no other part of the organisation can do what the powerful group

does.

Uncertainty groups can cope with the unpredictable effects of the

environment.

Finally there is the garbage can model for strategy formulation, which is said to be

most appropriate where there is collective uncertainty about what to do. The garbage

can stores ideas, processes and solutions that were rejected as solutions to earlier

problems. When there is a need to do something a choice opportunity we look in the

garbage can and find a collection of ideas and solutions that we can use now.

Whichever approach to strategy development we take, it is important to provide a

written statement of our strategy because:

It provides a focus for the organisation at all levels

It provides a framework for the allocation of investment and other resources

It provides a guide to innovation

It enables appropriate performance measure to be put in place

It tells the outside world, our stakeholders, about us.

3.3 External Environment Analysis

Most organisations face a complex and changing external environment of increasing

unpredictability. It is essential that we monitor this environment and its effect on our

strategy. PESTLE analysis provides a framework to examine the external environment.

This is an examination of the political, economic, sociocultural, technological, legal and

environmental issues in the external business environment.

Having examined the external environment, we should now consider the competition

our organisation faces .Michael Porters five forces model (Porter 1980) is an analysis

tool that helps to evaluate an industrys profitability and hence its attractiveness.

3 Strategy Analysis


In the centre is the competitive battleground, where rivals compete and competitive

strategies are developed. Organisations seek to understand the nature of the

competitive environment, and the interplay of the five forces, in order to develop

strategies against the threat they pose.

There are some weaknesses to Porters framework. Most often mentioned is that

government is not treated as a sixth force. Porters response is that the role of

government is played out though each of the five forces legislation affects rivalry and

new entrants - and so has not been ignored. It is also difficult to apply this model to not-

for-profit organisations.

Having worked on our PESTLE and Porter analyses we have gathered useful data on

the attractiveness of our business and the external conditions it may face. As there will

be a degree of uncertainty in trying to understand possible future impacts Scenarios

may be used to look at medium and long-term future, and evaluate possible different

futures. Scenarios begin by identifying potential high-impact and high-uncertainty

factors in the environment and evaluating their impact, our worst case scenario. Ideally

four or more possible scenarios should be considered.

The external environment creates opportunities and threats and can give an outside-in

stimulus to the development of strategy.

3.4 Internal Environment Analysis

Every organisation needs to ask whether it has the capability to change to fit the

environment in which it operates. To understand the organisations capabilities we will

3 Strategy Analysis


look at two internal analyses: the Resource Audit and portfolio analysis using the

Boston Matrix. But first we must understand the current business positioning and to do

this we use the MOST analysis to examine the current mission, objectives, strategy and

tactics, and consider whether they are clearly defined and supported within the

organisation. We can define the MOST terms as follows:

Mission describes what business the organisation is in, and what it is intending

to achieve

Objectives - the goals against which the organisations achievements can be

measured

Strategy the approach that is going to taken to achieve the mission and

objectives

Tactics the detailed means by which the strategy will be implemented.

Reflecting on core competences starts the strategy process from inside the

organisation, and so is an inside-out approach based on the belief that

competitiveness comes from the ability to create new products and services from a set

of core competences. The resource audit can help identify strengths and weaknesses

of these competences by examining the tangible resources:

The physical resources e.g. buildings, plant, equipment, land

The financial resources that determine the organisations financial stability

The human resources

And the intangible resources:

The know-how of the organisation

The reputation of the organisation

Many businesses have a diversified range of products and services. Portfolio analysis

of a business helps organisations to achieve balance with a mixture of high-growth,

profit-maximising, investment-needing and declining products and services. The

strategic business units (SBUs) parts of an organisation for which there is a distinct

and separate external market are identified and the relationship between each SBUs

current or future revenue potential is modelled against the appropriate management of it

using the Boston Box.

3 Strategy Analysis


A successful product or service starts as a wild cat and goes clockwise round the model

until it dies or is revitalised as a new product, service or SBU.

3.5 SWOT Analysis

SWOT (Strengths, Weaknesses, Opportunities and Threats) analysis is often used to

pull together the results of an analysis of the external and internal environments.

3.6 Implementing Strategy Implementing new strategies implies risk because it involves change. We need to consider the context for the strategy, the role of the strategic leader and tools to assist strategy implementation, the Balanced Business Scorecard (BBS) and the McKinsey 7-S Model. First the context:

Time how quickly does the new strategy need to be implemented? Scope how big is the change? Is it incremental or transformational?

3 Strategy Analysis


Capability is the organisation used to change? Readiness is the whole organisation, or part affected, ready for the change? Strategic leader is there a strategic leader?

The strategic leader has a key role in enabling the successful implementation of strategic change. The key characteristics seem to be that the strategic leader does the following:

Challenges the status quo

Establishes and communicates a clear vision of the direction to be taken

Models the way Empowers people to deliver their parts of the strategic change

Celebrates success The McKinsey 7-S model

This model supposes that all organizations are made up of seven components. Three are often describes as hard components strategy, structure and systems and four as soft- shared values, style, staff and skills. If there is a change in one component, others will be affected. All seven levers therefore need attention if the implementation is to be successful. The Balanced Business Scorecard (BBS) This can be thought of as the strategic balance sheet for an organization since it captures both the financial and non-financial components of a strategy. When

3 Strategy Analysis


implementing strategy it is essential to identify critical success factors in both financial and non-financial components and use associated key performance indicators to monitor progress in each area towards achieving the strategy and vision.

The acronym CLIF will help you remember the four components of the BBS. The BBS was developed by Kaplan and Norton (1996). Extract from


BCS.

4 The Business Analysis Process Model

4 The Business Analysis Process Model v1 Page 17

The Business Analysis Process model is a framework within which both standard

modelling techniques and organisational templates can be used. The framework

enables the Business Analyst to determine the most appropriate tools and techniques

for each situation, and incorporates the best practice principles of requirements

engineering.

4.1 An approach to problem-solving

Isaksen and Treffingers (1985) creative problem-solving model provides a useful

framework for understanding business problems and developing creative solutions. The

model emphasise the need to investigate and analyse rather than leap to quick,

possibly premature, solutions.

When applied to business analysis the model may be used as follows:

Mess finding understand the complexity of the problem situation, document

with a rich picture or mind map

Data finding analyse opinions, concerns, knowledge and ideas identify where

supporting data will help quantify this information

Problem finding using the work of the two previous stages uncover the heart

of the problem

Acceptance

Finding



The first three stages are concerned with understanding the problem, the next two

stages focus on developing solutions:

Idea finding use creative problem solving techniques to generate a wide range

of ideas e.g. brainstorming, assumption reversal, random words or pictures.

Solution finding evaluate the ideas that could provide solutions to the

problem(s)

The final stage is Acceptance finding, which is concerned with managing the

implementation of the solution.

Did you spot the picture of the dog and the mnemonic to help you remember the

stages of this model? My Dog Pants If Shes Active.

4.2 The Business Analysis Process Model

This model sets out the key stages for a business analysis project, with each stage

representing the areas that need to be considered. Some projects may require a

detailed exploration of all the stages, other projects may focus on a subset of the

model, possibly just one stage. The course will consider each of the stages,

identifying the inputs to each stage, the techniques used in the stage and the

outputs from the stage. Briefly the stages are:

Investigate situation- uncover issues and problems in the business

Consider perspectives analyse stakeholders and consider their

perspective of the situation, their view of what the business should be doing.

Analyse needs identify where improvements can be made to the business

system by doing a gap analysis

Evaluate options examine the potential improvements identified so far

developing some business options, evaluate them for acceptability and

feasibility and produce a Business Case



Define requirements - gather and document the detailed requirements for

changes to the business system recommended and signed off from the

Business Case.

4.3 Delivering changes

Once the business analysts have analysed the situation, developed options for

improvement and defined the requirements to be delivered, it is important to

consider how the requirements will be delivered, the changes implemented and the

business benefits realised. The business analyst will support others in the project

team to deliver the changes.

Extract from


BCS.

5 Investigation Techniques

5 Investigation techniques v1 Page 20

If analysts are working with an unfamiliar client organisation (or division or department)

they should spend time gathering background information prior to beginning the

investigation stage of the Business Analysis Process model, by studying:

company reports

the company website

procedure manuals and documentation

the organisation chart of the target area of the company

5.1 Investigation Techniques

The techniques can be categorised broadly as qualitative understanding what is

needed and quantitative- concerned with volumes and frequencies.

The qualitative approaches are:

Interviews usually a one-toone meeting

Observation

o Formal observation watching a specific task being performed

o Protocol analysis business staff perform a task and describe each step

as they perform it

o Shadowing following a business user for one or two days to find out

what a job entails

o Ethnographic study the analyst spends an extended period, possibly

several months, in the target environment

Workshops a structured meeting, ideally lead by an independent facilitator.

Scenarios the business user tells the story of a transaction from trigger to

outcome, capture the happy-day scenario first

Prototyping - creating a demonstration system to help clarify vague

requirements, may be mock-ups on paper using flipchart sheets, pens and packs

of Post-it notes.

We will consider the advantages and disadvantages of each technique during the

course. A variety of discovery and documentation techniques may be used in a

workshop. Discovery techniques include:

Round robin

Brainstorming

Brainwriting

Post-it exercise

Stepwise refinement



Documentation could be by:

Process models

Rich pictures

Mind maps

Context diagrams

Use case diagrams

Task scenarios

Focus groups are a type of workshop which tends to be concerned with business and

market research.

The quantitative approaches are:

Questionnaires useful for a limited amount of information from a large

audience, particularly if they are geographically dispersed.

Special purpose records business users make a record about a specific issue

or task, could be as simple as a five bar gate tally.

Activity sampling a quantitative form of observation, where the amount of

time taken on a range of activities is recorded by the business analyst

Document analysis reviewing completed forms, screen layouts and reports to

uncover detailed information about an organisation, process or system.

5.2 Documenting the current business situation

While carrying out the investigation the analyst will need to record the findings to

understand the range of issues and business needs. Meeting reports will be produced

for each interview and workshop. In addition there are diagrammatical techniques that

are also useful in documenting the investigation and analysing the situation:

Rich pictures a free format representation of the entire business situation

Mind maps a tool for summarising a lot of information visually, showing

connections between ideas and topics

Business process models to understand how a process is carried out a

swim-lane diagram or an activity diagram may be drawn

Spaghetti maps show the movements and interactions of stakeholders when

performing particular tasks and processes

Fishbone diagrams also known as Ishikawa diagrams. The technique is

known as root cause analysis.



A business needs log can be produced once the key causes of the problems have

been identified and we can begin to consider how the problem may be addressed which

may lead to some high level business requirements.

Extract from


BCS

6 Stakeholder Analysis and management

6 Stakeholder Analysis and Management v1 Page 23

Effective stakeholder management is essential for the success of a business analysis

project. The main responsibility for stakeholder management rests with the project

manager, but all project team members have a role to play in identifying stakeholders,

helping to understand their needs, managing their expectations and monitoring any

changes during the project lifecycle.

When does stakeholder management take place? Throughout the project lifecycle.

6.1 Stakeholder categories and identification

A stakeholder is anyone who has an interest in, or may be affected by, the issue under

consideration. Generic stakeholder categories that apply to many projects are:

Partners

Suppliers

Regulators

Employees

Managers

Owners

Competitors

Customers

To ensure that the identification of the stakeholders is as complete as possible a

workshop may be held with people who are knowledgeable about the organisation and

the proposed project.

6.2 Analysing Stakeholders and stakeholder management strategies

The next step is to analyse the attitudes towards the project, assess their interest in the

project and the amount of power or influence they have, which will determine their ability

to support of obstruct it. The stakeholder analysis may be plotted on a grid and then

management strategies can be applied:



No interest and no power/influence ignore as regards day-to-day project

issues

Some or high interest but no power/influence keep these stakeholders

informed during the project and of the reasons for the proposed change

No, some or high interest and some power/influence keep onside by frequent

positive communication

No interest but high power/influence Watch these stakeholders, they may be

senior managers who have no direct interest in the project, but their attitude and

interest may change during the project

Some interest and high power/influence Keep them satisfied, their interest

may be indirect but they have real power

High interest and high power influence these are key stakeholders, they must

be kept informed at all stages of the project. They require constant active

management.

6.3 Managing stakeholders

Stakeholders positions on the grid may not stay in the same place during the life of the

project, their power or interest may change, and our management of them must change



accordingly. Therefore stakeholder analysis must be a continuing activity throughout the

project, and even afterwards to find out what the stakeholders thought of the final

outcome. Once stakeholders initial positions have been plotted, a plan should be drawn

up for what to do with each of them. Plotting stakeholders attitudes may be helpful. We

may classify attitude as:

Champion: actively works for the success of the project

Supporter : in favour of the project, but not very active in promoting it

Neutral : neither for or against the project

Critic : not in favour of the project but not actively opposed to it

Opponent : works actively to disrupt, impede or derail the project

Blocker : obstructs progress, maybe for reasons outside the project itself

The plan could be recorded on a spreadsheet:

Extract from


BCS.

7 Modelling Business Systems

7 Modelling Business Systems v1 Page 26

Once we have identified and analysed the different stakeholders, we can begin to think

about their views with regard to the business system under investigation. Before going

on to model the business processes, we need to be clear about the values and beliefs

of stakeholders. We can use this understanding to develop models of desired future

business systems, which we can then assess against current real-world situations.

7.1 Soft Systems Methodology (SSM)

This methodology was developed by Peter Checkland (1981) to deal with business

systems, which he described as human activity systems. This soft systems model is

proposed as an alternative to the hard systems thinking approach, which assumes the

goals and objectives of business systems are clear. Checkland and others recognised

that business situations are rarely clear-cut, are often messier and that the softer

human aspects i.e. stakeholders thoughts and concerns, must be taken into account for

successful business change.

SSM begins with an investigation into a real world situation of concern and Checkland

proposed we use rich picture to document it. The different world view of each

stakeholders is then developed using a CATWOE and formalised as a sentence, known

by Checkland as a root definition, but we prefer the term business perspective. From

each business perspective a model of the stakeholders desired business system is

produced, then the differences between these conceptual models are considered and

the models are brought together in one consensus model, which represents the desired

future system.



This model is then compared to real world models, including the rich picture we

produced earlier. By carrying out a gap analysis we can identify feasible, desirable

changes that need to be made to the existing business system. This leads us to taking

action to improve the problem situation, and could involve changes to the People,

Organisation, Processes and Technology.

7.1 Business Perspectives

The key stakeholders are asked how they view, from their own perspective, the purpose

and objectives of the part of the organisation that is within the scope of the change

project. SSM offers a useful framework for defining and analysing business

perspectives, given by the mnemonic CATWOE. The elements of CATWOE are:

C= customer: the beneficiary of the transformation

A= actor: those responsible for carrying out the business activities within the

scope of the view being considered

T= transformation: the activity at the heart of the system, that transforms input

to output

W= Weltanschauung or world view: an encapsulation of the stakeholders

beliefs about the organisation or business system

O= owner: the person, or group of people, who have the authority to change or

even stop the business activities being performed

Environment: the conditions and rules under which the business system

operates which are outside the control of the owner e.g. the PESTLE factors

When using CATWOE it is important to begin by understanding the Weltanshauung or

world view, since this encapsulates the beliefs that underpin the rest of the CATWOE.

After this define the transformation, and the customer, and then consider the actors,

owner and environment. Checklands root definition is developed as a sentence that

ties the CATWOE elements together.

7.2 Business Activity Models (BAM)

A BAM is a conceptual model that shows the business activities we would expect to

see in place given the business perspective from which it has been developed. Ignoring

what is currently happening in the business system; we use the BAM or root definition to

reveal the activities that comprise the system envisaged by the stakeholder. The

principles are:

Draw one BAM for each business perspective

Bring all the BAMs together in one consensus BAM

The BAM helps with analysing the business situation and identifying

improvements



The model is concerned only with WHAT the activities are not WHO carries them

out or WHERE they are carried out.

Business systems are described using five types of business activity and the

dependencies between them. The types of activity, and the order they should be drawn,

on are:

Doing activities relate directly to achieving the transformation described in the

business perspective, and may be called primary task activities

Enabling activities - ensure resources and facilities needed by the doing

activities are obtained and deployed

Planning activities define the rules regarding the resource required, and

performance of these resources is to be measured

Monitoring activities collect metrics to check the performance of activities

against targets set as part of the planning activities

Control activities act on other activities when monitor activities have identified

the need for some action, usually when targets have not been met

Activities are drawn as ellipses and the logical dependencies between the activities are

shown by an arrow. See the Library Business Activity model below:



7.3 Producing a consensus model

The BAMS produced up to this point have each been derived from an individual

perspective from a key stakeholder. By merging these models, to take account of all the

stakeholder perspectives, we can produce a consensus model. This will involve

negotiation with stakeholders to resolve conflicting views, and may take place in a

facilitated workshop. The kinds of consensus are:

Global consensus which assumes a neutral model exists for organisations of

a particular type

One hundred percent consensus stakeholders readily agree that an activity

is needed

Consensus through accommodation stakeholders with conflicting views

agree to compromise. The creation of additional activities and/or modification of

existing activities may be necessary to achieve this consensus.

7.4 Business events and business rules

Once the consensus model has been created add business events and rules. Business

events happen in the real world and they trigger the business system to do something.

We must document the events and relate them to the activities they trigger, either by

adding to the BAM or is associated documentation. There are three types of business

event to consider:

External: events which originate from outside the system boundary

Internal decision points: decisions made by business managers

Scheduled points in time: events that occur regularly

For the activities identified in the BAM there will be rules governing their performance.

Business rules are of two main types:

Constraints: restrict how an activity is performed. They may include laws,

regulations and business policies which cannot be challenged

Operational guidance: procedural rules that dictate how activities should be

performed, which can be changed

These business rules would emerge in discussion of the activities with the stakeholders

and should be documented to support the BAM.



7.5 Critical Success Factors (CSF) and Key Performance Indicators (KPI)

The CSFs are things the organisation must be good at in order to succeed e.g. excellent

customer service. They provide insights into the planning, enabling and doing activities

on the BAM.

The KPIs are the things an organisation measures to find out how well it is doing

e.g.Customer satisfaction rating of 85% or higher each month.These may be identified

by considering the planning activities. Checking up on the KPIs should be reflected in

the BAMs monitoring and control activities.

7.6 Validating a Business Activity Model

To ensure that the BAM is complete and internally consistent Checkland provided the

following checklist:

Objectives and purpose (of the system): must be explicit

Connectivity: the activities must all be connected

Measures of performance: must exist and expected levels must be set

Monitoring and control mechanisms: control activities must have the power to

change other activities when performance levels are not met

Decision-making procedures: must exist and be influenced by control activities

Boundary: the extent of the system must be clear, and communications across

the boundary defined explicitly

Resources: staff, materials and other resources used by the system must be

acquired, allocated, replenished and accounted for

System hierarchy: a business activity should be in the scope of only one control

activity

7.7 Use of the Business Activity Model in gap analysis

The BAM represents a theoretical (conceptual) model of the activities we would expect

to see in place in our future business system. We compare this model to the current

reality in the organisation by doing a gap analysis to identify:

Some activities are in place and are quite satisfactory

Some activities are in place and are not satisfactory

Some activities are not in place at all

This enables us to identify activities that can continue, activities that need improving and

new activities that will need implementing.



Extract from


BCS.

8 Modelling Business Processes

8 Modelling Business Processes v1 Page 32

The business processes are the means by which an organisation carries out its internal

operations and delivers products and services to it customers. We will look at

techniques for modelling business processes, covering both the organisational view of

process modelling and the more details business process models.

8.1 Organisational context

The traditional view of a business is based on the specialist functional areas such as

sales, accounts and operations.

The functional view is useful for internal management and staff to see how the

organisation is structured and where they fit in, but this view in internally oriented which

is of no interest to the organisations customers. This view is also static, since it does

not show what the business does over time to respond to an event such as a customer

request for a product or service. This is in contrast to the process view which

emphasises the need for cooperation between all the participants to achieve the desired

level of customer service.

8.2 Alternative view of an organisation.

Paul Harmon (2007) offers an alternative view. His organisation model represents both

the internal processes and the external world, it is developed in two stages: first the

external forces that influence the organisation are considered and then the internal

business process is analysed.



8.3 The organisational view of business processes

Once we have understood the circumstances in which the business operates, we can

focus on what the business does when reacting to the external environment. What are

the internal business processes? Starting with a high-level view of processes that

operate across the business we need to show the end-to end set of processes that

convert the inputs from suppliers to the outputs for the customers. This high-level view

may be shown:

To build a business process model we take this high-level view and break the process

down into a series of related processes which can be shown on an outline process map:

Business process models show a more detailed view of the processes than on a

process map.



An alternate approach to building a process map is to look at the products and services,

and consider what processes are required to deliver them. Michael Porters value chain

provides a means of analysing the activities performed by an organisation. It identifies

the primary and support activities that will be required to deliver value to the

organisations customer and potentially differentiate the organisation from its

competitors.

8.4 Value propositions

A value proposition is a definition of an organisations product or service that will

demonstrate to customers that we understand and can satisfy their needs. Kaplan and

Norton have identified the main attributes that make up a successful proposition. The

product attributes are:

Functionality what the product does

Price

Quality how well the product performs

Choice do we provide a standard product or service, or can it be tailored to

meet the customers needs.

Availability or timing how quickly can we respond to customer requests

8.5 Business process models

A business process is triggered by a business event and includes five components: the

tasks that make up the process, the process flow, the decision points, the actors that

carry out the tasks and the outcome of the business process. There are no universally

agreed set of terms in business process modeling. The following conventions are

adopted here:



Process refers to a set of activities starting with a triggering event and ending

with some output being delivered

Task refers to an activity within the process carried out by an actor

Step refers to the activities carried out within a task

There are many standards for modelling business. Two of the most popular are the

UML activity diagram technique (example below) and the Business Process Modelling

Notation (BMPN).

To build a business process model first identify who takes part in the process, this

enables us to identify the actors or roles. An actor may be an individual, a group, an

organisation or an IT system. Each actor is shown in a separate partition or swimlane

and arrows are used to show the flow of work between the tasks and the swimlanes.

The flow of work from one actor to another is known as a handoff. The customer

swimlane is normally placed at the top and the action on the model goes from left to

right on a horizontal layout, following the time axis, and from top to bottom as different

actors are involved in the process. Tasks should be labelled in a verb-noun format and

where possible use specific verbs, avoiding words such as manage or handle.

8.6 Analysing the business process model

Analysing the business process model helps us to identify problems with the existing

process before producing a replacement process. Handoffs are a frequent source of

problems in a business process because they can cause delays, errors and bottlenecks

to occur.

act Le Grand Pied

Billing D

epartm

ent

Chie

f Cle

rk Create project

Assign resources

Post

assignments

to treaders

Receive actuals

from treaders

Update diary

Send actuals to

bil l ing

Receive actuals

from chief clerk

Calculate total

charge

Raise inv oice Despatch invoice

to client

Receive payment

from client

Record

payment

FlowFinal

Receive payment

from bill ing

Close project

Receive

client call

Notify chief clerk

payment received

ActivityFinal

[complete]

[incomplete allocation]



Look for piecemeal modifications which have been made to parts of the process,

without considering the process as a whole, causing inefficiencies and inconsistencies.

These problems arise over time and may include:

Duplication of work

Lack of standardisation

Inconsistent measurement or control

8.7 Improving business processes

By removing problems identified in the as is process and challenging assumptions,

upon which the current process was built, we can improve the process. The approaches

to take include:

Simplifying the process

Remove bottlenecks

Change the sequence of tasks

Redesign the process

Redefine the process boundaries

8.8 Process measurement

As well as designing improved business processes we must define how well that

processing must be carried out, how it will be measured. There are two perspectives on

performance measurement: for internal management purposes and for external

customers.

Internal measures are often derived from organisational objectives, critical success

factors and key performance indicators, defined at each level of the organisation. The

problem is that the focus here is on what the organisation wants to achieve and not on

what the customer values.

External measures relate to what the customer expects to have delivered. The three

main areas to consider when improving a business process are

the time it takes to complete a process or task

financial measures, such as costs and prices

the quality measures associated with accuracy and effectiveness

Process and task measures

The customer will have an expectation of the organisations performance in delivering

the product or service. Internally, the process may be made up of several tasks each of

which will need to be allocated performance measures.



These measures need to work collectively to achieve the overall performance measure

for the product or service. A timeline may be added to the swimlane diagram to show

task durations.

Performance issues

Measures and targets need to be chosen with care, especially when managers are

given incentives to achieve those targets. Targets change the way people behave and

this can lead to sub-optimisation where seemingly better performance in one part of

the business can result in poorer performance for the business as a whole, and hence

failure to meet customer expectations.

8.9 Six Sigma

An alternative approach to process improvement developed by Motorola in the 1980s

and based on ideas from statistical process control. Six Sigma follows a five-step

approach: define the problem, measure the data, analyse the problem, improve the

process by removing the root causes, and then introduce control to prevent the original

problem from reoccurring and to maintain the benefits of the changes made, the

DMAIC approach.

Extract from


BCS.

9 Gathering Requirements

pcr_09_gathering the requirements v1.docx Page 38

9.1 Why is it so difficult to get the requirements right?

Well whenever you meet anyone from the business user team and ask them what it is

they need, or what is the problem, the chances are you will be given all sorts of

information, opinion, view, want, wish, hope and solution.

All muddled together without any clear view of what is the most important or critical

requirement, if indeed you have all the requirements.

Is it unreasonable to expect clear, concise requirements from people, well possibly it is,

but the business analyst should strive to achieve this as the requirements are the basis

for the future development and will form the bedrock of all that happens next.

Typical problems with requirements have been identified as;-

Lack of relevance to the objectives of the project

Lack of clarity in the wording

Ambiguity

Duplication between requirements

Conflicts between requirements

Requirements expressed in such a way that it is difficult to assess whether

they have been achieved;

Requirements that assume a solution rather than stating what is to be

delivered by the system

Uncertainty amongst business users about what they need from the new

system

Inconsistent level of detail

Business users and analyst taking certain knowledge for granted and

failing to ensure that there is common understanding.

Some of these problems arise because there are no clear terms of reference for the

project, although the business have selected an option from the choice presented to

them in the business case, it is still possible for them to have personal ideas about what

is being proposed.

A Useful mnemonic to remember for the terms of reference is OSCAR which stands for:

Objectives of which both business and project objectives should be defined.

Scope the aspects to be covered, typically defined by specifying the activities

and deliverables of the project. Also areas that are out of scope.

Constraints any constraints that apply such as budget, timescale or standards

that are applicable.



Authority the business authority for the project, ensuring that there is an ultimate

arbiter to handle any conflicts between business users and their requirements.

Resources the people and equipment available to the project.

Recognising that it is essential that the requirements are well structured, correct,

concise and complete before further work takes place has led to the necessity for a

requirements engineering process.

9.2 REQUIREMENTS ELICITATION is the first activity, which is concerned with

gathering information and requirements from the business stakeholders.

The business user will be asked, by means of an interview or a workshop or some other

fact finding technique to tell the business analyst what they know about their job.

Usually you will be given lots of explicit knowledge; knowledge of procedures and

data, the things that they can easily remember. What is difficult for people to recall or

share is the tacit knowledge that is born of performing a task frequently and intuitively.

Examples of difficulty with gathering requirements:-

Skills explaining how to carry out actions by using words alone is very difficult

and sometimes people forget the detailed steps.

Taken-for-granted information - very difficult to ask about things you dont

know, that you dont know.

Front story/back story- you can be told what the standard approved process is

but this might not be how they actually do their job, there might be work arounds

in place that they dont want to admit.

Conceptualising requirements trying to imagine how the system will work in

practice can be difficult; various techniques will help with visualisation.



Your finger you fool - cultural differences mean that, what one group might

consider normal practise another country might not understand.

Intuitive understanding, usually born of considerable experience - very

difficult to enunciate but over time people just know what to do, if asked to

describe how or why they did something they might not be able to describe the

steps.

In addition to an individuals tacit knowledge there will be organisational tacit

knowledge where again things are just known rather than documented and written

down. These include:-

Norms of behaviour and communication these evolve over time in every

organisation.

Organisational culture.

Communities of practice different parts of the organisation may have their

own ways of working which are not universally shared. A business analyst would

need to be aware of these if there are crossfunctional changes.

Organisation history

Types of tacit and explicit knowledge

Tacit Explicit

Individual Skills, values, taken-for-granted knowledge, intuitiveness

Task definitions, job descriptions, targets, volumes and frequencies

Corporate Norms, back story, culture, communities of practice, organisation history

Procedures, style guides, processes, knowledge sharing repositories, manuals, company reports.

9.2.1 Requirements elicitation techniques

The fact finding techniques have already been described in chapter 5, but where you

have tacit knowledge there is a need to reveal this information and wherever possible

change it into explicit knowledge by means of documentation and dissemination.

Specific fact finding approaches will be more successful than others and these include:-

Become an Apprentice by shadowing or protocol analysis

Scenario role-playing and prototyping can Enact a particular process

Tell a story or build a scenario and Recount what is happening

Do some observation and Observe what actually happens



Use these approaches to get the tacit information, report and record, what information

you get and disseminate this to your team. The mnemonic AERO may help you

remember these approaches.

Maiden and Rugg (1996) produced the following table of techniques and which

knowledge types they were useful for.

Technique Explicit knowledge

Tacit knowledge

Taken for granted

Front/back story

Skills Future Requirements

Interviewing XX X X X X X

Shadowing XX XX XX XX XX X

Workshop XX XX XX X X X

Prototyping XX XX XX X XX XX

Scenario Analysis

XX XX XX X X XX

Protocol Analysis

XX XX XX X XX X

As we gather the requirements we will need some organised way to hold all the

information, this is covered in building a requirements list, ultimately an organised

requirements catalogue will be produced. The business needs log, covered in chapter

5, is an input to the requirements list. The list should contain basic information in three

columns, Requirement, Source and comments, all of which will be built on to form the

requirements catalogue.

9.3 REQUIREMENTS ANALYSIS the second activity in the requirements engineering

process.

Separating the elicitation and the analysis of the requirements gives the business

analyst the chance to look again at the requirements and to ensure that they meet the

quality criteria so they should be:-

Clear, concise, feasible, aligned with the project objectives, not in conflict with other

requirements nor overlapping or duplicating.



Firstly it is useful to group the requirements according to the following categories:-

BUSINESS GENERAL Business Constraints

Business policies

Legal

Branding

Cultural

Language

Business Continuity

SOLUTION FUNCTIONAL Data Entry

Data Maintenance

Procedure

Retrieval

BUSINESS TECHNICAL Hardware

Software

Interoperability

Internet

SOLUTION NON-FUNCTIONAL Performance

Security

Legal and Access

Backup and recovery

Archiving and retention

Maintainability

Availability

Usability

Capacity

Next apply a series of filters in order to ensure that the requirements are well defined:-

Overlapping or duplicate requirements

Unravelling multiple requirements

Necessity checking

Feasibility evaluation (technical, business and financial)

Removing conflicts

Checking for solutions

Confirming quality, checking for requirements which are:-

Clear Concise Consistent Relevant

Unambiguous Correct Testable Traceable

Naturally there will be some need to tidy up following this activity with the following

actions needed:-

Accept the requirement as it stands and document it in full in the requirements

catalogue

Reword the requirement to remove jargon and ambiguity

Merge duplicated or overlapping requirements and reword them

Take unclear, ambiguous or conflicting requirements back to the business users

for clarification.



Hierarchy of requirements

Requirements are often related to each other, some general and technical requirements

refer to business policies that are elaborated and expanded in the non-functional and

functional requirements. Understanding the hierarchy of requirements helps ensure that

they are consistent and coherent. When we define the functional requirements the

business context and basis that underpins and supports it is clear, similarly we

understand why the non-functional requirements are so important to the business.

Finally, make sure that the requirements are SMART, specific, measurable,

achievable, relevant and time-framed.

9.4 VALIDATING REQUIREMENTS the third activity in the requirements engineering

process.

The requirements will need to be validated to ensure that in the rewording or rephrasing

activity nothing has been lost and that they still represent an accurate statement of the

business representatives requirements.

A review group, workshop, (led by a chairperson with a business analyst on

hand)made up of key stakeholder groups as listed below must check the requirements

to see that they meet their needs, suggested participants are:-

The business sponsor in business alignment and within scope.

The business owners - address business needs

The domain expert they reflect business practice

The developers they are technically feasible

The testers that they are testable

Project Office - compliant with quality and business standards.

The outcome of the review will be

1. signed off where all the requirements are satisfactory

2. Minor amendments will require modification before the review chairperson

accepts the document and then it is signed off.

3. Major amendments will require another review following significant reworking

9.5 REQUIREMENTS DOCUMENTATION is concerned with the development of a

well-organised requirements document; this is covered in chapter 10.

9.6 REQUIREMENTS MANAGEMENT anticipates the need for change control of

the requirements, because it is highly likely that there will be some level of

change during the project, and control is needed to ensure this does not de-rail

the project.



Who is involved in this requirements engineering process?

As expected there are two groups who are involved:-

The business representatives:-

The project sponsor. Their role is to ensure the project is successful overall, the

sponsor owns the solution.

The domain expert (or subject matter expert). The people who provide high

level advice on the requirements, they bring a breadth of knowledge about the

business area.

The business users. These people will be the new users of any changed

environment, they are directly impacted by any changes and will ultimately be

using any processes as Business as Usual (BAU).

The second group are the project team or teams who will be responsible for

developing the solution.

The project manager manages the team to ensure delivery of the new or

amended artefacts, the business system and the IT solution. Performs all the

expected management functions to keep on track and within the business case,

which is constantly monitored.

The business analyst performing the requirements engineering work and then

developing the business outputs needed.

The developers will check the technical feasibility of some of the requirements

and help the business analyst appreciate the technical implications of them. The

developer will be able to produce prototypes to help the business users to

visualise what they have requested.

Extract from


BCS.

10 Documenting and managing requirements

pcr_10_documenting and managing requirements.docx Page 45

10.1 There are many reasons for needing good documentation.

1. It enables communication within the project team and provides a basis

for ensuring that all of the related requirements are consistent with

each

2. It provides a firm basis for validating the requirements by

stakeholders.

3. Any further work to develop and test the business solution will use

the documentation as input to these activities.

10.2 THE REQUIREMENTS DOCUMENT

Structure the document needs to be clearly laid out and should wherever possible

follow a standard template to ensure nothing is forgotten.

Content -

Introduction and background business situation and drivers for the

project

Business Process Models to be process and optionally the as is

process

Function model context or use case diagram of the proposed

software solution

Data model as appropriate to the solution (ERD or CLASS diagram)

Requirements catalogue developed from requirements list (chapter 9)

Glossary of terms

Additional business specific documents

Documenting a requirement

The requirement list created in chapter 9 is further developed to become the

complete requirements catalogue using where possible a standard template or

possibly a software tool for the purpose.

Contents should include:-

1. Unique requirement identifier for each requirement to aid traceability

2. Requirement name

3. Requirement description

4. Source

5. Owner

6. Author

7. Type of requirement



8. Priority

a. M must have

b. S should have, need it in 2nd increment

c. C - could have if time and budget allowed

d. W wont have this time

9. Business area

10. Stakeholders

11. Associated non-functional requirement

12. Acceptance criteria

13. Related requirements

14. Related documents

15. Comments

16. Rationale

17. Resolution

18. Version history

Producing a full definition for each requirement will be extremely time-consuming

and not in all cases necessary so consider the following:-

The stage of the analysis, might be too soon to have much detail

The nature of the solution, IT or business process change

The priority, if it is rated as W, wait until it becomes an M or S priority

The SDLC

10.3 MANAGING THE REQUIREMENTS

The elements of the requirements management lifecycle are:-

Requirements identification Unique id.

Cross-referencing Backwards from traceability to a requirement from any later stage in the business change or SDLC including testing.

Forward to traceability to identify any requirement and track where it has been developed and implemented.

Origin and ownership The source of this requirement and the future business owner who will be responsible for using it.

Configuration management Configuration management is all about controlling changes within a project and protecting requirements from unauthorised change. Mechanisms must be put in place to ensure correct Configuration is adhered to these include:-



Configuration identification

Configuration control ensuring work products are base lined.

Software support Where and how the requirements will be managed, a software tool would be useful

Change control Documenting the proposed change (a change request)

Consulting the stakeholders

Deciding on the change

Extract from

Debra Paul, Donald Yeates and James Cadle (2010), Business Analysis (2nd

Edition), BCS.

11 Modelling Requirements

PCR_11_ Modelling requirements.docx Page 48

11.1 Any document which contains lots of words will be constrained by the

individuals who write it and the people who read it, their own knowledge will always

influence their understanding.

Not so with a model which has been drawn to precise modelling notation and rules,

once verified, the models can be interpreted unambiguously.

This syllabus uses well recognised and commonly used models from two standard

approaches:-

Unified modelling language (UML) for both data models (CLASS DIAGRAMS)

and process models (USE CASE DIAGRAMS)

Structured methods data model an Entity Relationship diagram (ERD)

11.2 Modelling System Functions.

A function may be defined as a set of actions that the business users want the IT

system to support in order to achieve a specific goal, such as ACCEPT ORDER.

In the UML a use case is something that an actor wants the IT system to do, it is

a case of use of the system by a specific actor and describes the interaction

between the actor and the system. Each use case will have a stated goal and will

contain a description of the actions that the system must perform in order to achieve

the goal.

The use case diagram will consist of the following elements:

Actors - whoever requires a service from the system, could be people, time

or another system.

Each use case is shown in an oval and represents a function that the system

will perform in response to a trigger from the actor, the naming of use cases is

always verb-noun

The system boundary is indicated by a line around all the use cases with the

actors on the outside, this identifies the scope.

Associations indicate which actors will need to interact with which use case.



Use case diagrams are particularly helpful during a workshop as they are easily

understood by business users and provide an excellent framework for discussion.

The extent that a business analyst on this course needs to understand use cases is

elementary; however there are a couple of things that should be considered for

inclusion.

The use of and

o is used to identify common processing, where something

always happens. As each use case will eventually be coded,

duplicated information can be taken out and put into a standard

component so that it is only coded and tested once.

o is used where, under certain, specified conditions, some

additional processing is required, exceptional or infrequent things. The

extend items are permitted within the business rules and extend the

*functionality of the use case.



ENTITY RELATIONSHIP DIAGRAMS

These diagrams are used to identify the data structures required within any

organisation and are generally created and maintained for a whole organisation.

Specialist data modelling skills are required and many organisations will have expert

data analysis staff.

The purpose of the diagrams is to identify the data that is of importance to any

organisation, to record the details of where the data is held and the relationship

between one set of data and another.

The terminology used is:-

An ENTITY something of interest to the organisation that the business needs

to hold details about such as:-

o Something physical - an order, a customer a supplier

o Something conceptual a booking or an appointment

o Something active a meeting or a course

When drawing an Entity relationship diagram the entities are represented as

rectangles.

Hidden within an entity are the attributes, the bits of data that are held within

that entity, such as an order date, a customer name, a supplier address. The

attributes will be held within a data dictionary and will define the size and

format of the data itself, an order date would be numeric for example.



Entities should be related to other entities by certain business rules and these

are represented by lines connecting entities. These lines are known as

relationships and the extent to which the entities are related is also included,

the relationship can be:-

o One-to-many

o One-to-one

o Many-to-many

This diagram tells the business analyst that an

Order will always have at least one Order item

and could have an unlimited number of order

items.

An Order item is always linked to one and only

one Order.

It is a One to many relationship.

Here the diagram tells the business analyst that

a Customer may not have an Order but if they

do have an order they could have an unlimited

number of Orders.

An Order is always linked to one and only one

Customer.

It is an optional relationship.

Here we show a many to many

relationship which is permissible

during analysis but once we get

to design it would need to be

resolved as it usually indicates

something missing.



When developing Entity Relationship diagrams business analysts and systems

analysts would be working together to get the information, which initially is a logical

representation of how the data is grouped. When the systems developer takes the

logical model into the design activity the models will turn into databases and files as

appropriate.

Every entity identified will hold information relating to its contents, a Customer entity

will hold data about the companys customers, if a company has 10,000 customers

then we would expect the customer file to hold 10,000 occurrences of customer

data, all of them different with some unique way of referencing them, usually a

customer number..

All relationships within an ERD

should be named so that the

diagram can be read in a

clockwise manner.

A Customer must be allocated to

a Sales Region. A Sales region

may be responsible for many

Customers

The last relationship we consider

is an exclusive relationship where

you can have either one or the

other but not both.



CLASS MODELS

Class models are used in the UML to represent the data connections in a similar way

to the Entity Relationship Diagrams, there are notational differences as you would

expect, but there are also interpretation and usage differences to be understood too.

ENTITY RELATIONSHIP DIAGRAM CLASS MODEL

ENTITY CLASS

OCCURRENCE OBJECT

ATTRIBUTES ATTRIBUTES

RELATIONSHIP ASSOCIATION

Not applicable OPERATIONS

A class will contain many objects, each object has a number of attributes, and in

addition a class diagram also shows for each class what the operations are that can

be performed on this class, these are the use cases identified in the functional

model. As each use case will mention the data attributes that it requires to perform

its functions, within the UML the data attributes are said to be encapsulated within

the use case This is a key feature of the Object Oriented approach that uses the

UML, fortunately in this syllabus you are not expected to know any more about OO

than that.

As with the ERD, the association lines show the connections between classes but

here, the line indicates that classes communicate via messages sent along the lines.

Multiplicity is also handled slightly differently on these diagrams. Where we had

crows feet to indicate many on an ERD, here we have the following symbols:-

1..*, is 1 to many

0..* is 0 to many

1..n indicates that you can use a specific number.

Both ends of an association will use the symbols



Class models have a couple of special diagramming mechanisms:-

Generalisation and inheritance is used to indicate where shared data is

identified and separated into an additional class. Each class is said to inherit

the generalisation attributes and operations and vice versa.

An association class is used to resolve many to many associations which

as mentioned in the ERD section are not acceptable at the design stage.

Extract from

Debra Paul, Donald Yeates and James Cadle (2010), Business Analysis (2nd

Edition), BCS.

12 Delivering the requirements

PCR_12_Delivering the requirements.docx Page 55

12.1 Once the requirements have been defined attention shifts to how the solution

can be implemented, the work done so far could require a major programme of

projects or a straightforward project involving both IT and business changes.

Quite often the business change team will be involved with determining the delivery

approach, i.e. the way the changes will be implemented into the business.

The factors under consideration will be;-

The business context. The nature of the organisation and the project

that will provide the basis for deciding how the solution will be

delivered.

o The nature and underlying philosophy of the organisation, here

we can consider questions such as what type of organisation this is,

the nature of the business domain within which it operates and the

values and beliefs of the senior managers.

o The business context for the required change, for example, what

the organisation is hoping to achieve in terms of business benefit as a

result of this project.

o Constraints on the project, for example timescales for delivering the

solution, the budget, what resources are to be made available and the

standards for the organisation.

o The prioritised needs of the business, for example improved public

image may be more important than cost savings or vice versa.

o The drivers for the project, for example whether this project is based

upon a need to comply with new legislation or whether it is concerned

to offer additional or enhanced services to customers.

The lifecycle, the process adopted for developing and implementing the

solution.

o The business change lifecycle shows the overall process but does not

show how the IT solution will be delivered. The development

approaches to IT systems are known as systems development

lifecycles (SDLCs) There are a number of approaches that might be

used as these have developed over time.

o The waterfall lifecycle was the original way in which systems were

developed through a series of sequential stages, each performed once

the previous stage has completed. The sequence of the stages is;-

Feasibility study

Analysis

Design

Development

Testing

Implementation

12 Delivering the requirements

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Output from one stage is input to the next, with sign off at the end of

each stage. Waterfall is still used in some places, and often for smaller

system changes. The principal benefit of this lifecycle is that it enables

good project management control. However the two major drawbacks

are the lack of testing until the solution was complete, and the difficulty

in making any changes throughout the lifecycle.

The V Model SDLC was introduced to link development activity with

testing activity. So all the phases of the waterfall are still performed but

each stage also has a level of testing linked to it, this makes for a more

robust development lifecycle.

o The stages and testing levels are;-

Define requirements -Ensure user acceptance

Design solution ----- -Test solution

Develop solution ----- Test modules

o There is an extended V model, which includes these additional

stages;-

Analyse business needs business Case > Review

Benefits

The incremental lifecycle takes the first three stages of the waterfall

model; feasibility study, analysis and design, as a separate unit of work

and then breaks down the rest of the development into increments to suit

business need. So, increment one will develop, test and implement the

most essential processes required by the business, increment two will then

develop, test and implement the next set of requirements and so on. IT

functionality is delivered in phases.

Boehms spiral model is used when requirements need to be clarified

during the build activity but control is still required over the whole

development. This approach greatly influenced the development of Rapid

Application Development (RAD). RAD has become hugely popular in

recent years as businesses need to change their requirements based on a

number of prototypes of the software. The prototype evolves and finally is

implemented in one delivery.

The approach, taken by both the IT development team and the business

analyst for the business artefacts, will involve methods and standards that

ensure

BCS Business Analysis Pre-Course Reading.pdf

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Transcript of BCS Business Analysis Pre-Course Reading.pdf