DATA WAREHOUSING Requirements

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Technology is important; business value is mandatory.

Define enterprise-level business requirements

Prioritize business requirements Plan the project Define project-level business requirements

What is the problem area? How does the business you approach it? Is the data available? Who will use the results? Who cares?

Give me the annual revenue of all my product lines divided over all the sales regions over the last 3 years

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Give me the top 10 of most profitable products this year

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Give me the top 10 of most sold products of last year

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Give me the top 10 of most profitable customers

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Compare the YTD revenue with the one in the same period last year and the target

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Collecting the Requirements

Interviews ▪ With individuals (or very small groups)

Facilitated Sessions ▪ Brainstorming with a larger group led by a facilitator

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Each one takes more time than interviews, but may generate more

Requires an experienced facilitator Requires an initial understanding of the user

area Participants feed of of each others ideas Participants can negotiate disagreements

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Prepare

Conduct

Business Interviews

Conduct IT

Interviews

Write up Interview Summaries

Identify Business Processes

Conduct Prioritization Session

Write Requirements Definition

Use Data Profiles

to Research Data

Sources

Build Initial Bus Matrix

Business Executive What are the business issues? What is your vision?

Business Manager or Analyst What are your measures of success? What data do you use? What analysis do you typically do?

IS Data Audit Data quality or quantity issues? Potential roadblocks (political or technical)? How is ad hoc analysis conducted?

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Interviews Interview Team

▪ lead interviewer, scribe, observers

Conducting the Pre-interview Research

Selecting the Interviewees

Developing the Interview Questionnaires

Scheduling the Interviews

Preparing the Interviewees

Conducting the Interviews ▪ Interviewer Rules

▪ Remember your Interview Role

▪ Verify Communications

▪ Define Terminology

▪ Establish Peer Basis

▪ Maintain Schedule Flexibility

▪ Avoid Interview Burnout

▪ Manage Expectations Continuously

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Process Date Product Vendor Shipper Dist

Cntr

Store Promo

Purchase

Orders

X X X X

Dist Cntr

Deliveries

X X X X X

Dst Cntr

Inventory

X X X

Store Deliveries X X X X X

Store Inventory X X X

Store Sales X X X X

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