Day1 Free Seminar

7/30/2019 Day1 Free Seminar

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Introduction to Data Warehousing an 1

WELCOME TO SICHER GLOBAL


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AGENDA FOR DISCUSSION

INTRODUCTION TO DATAWAREHOUSE

CHARATERISTICS OF A WAREHOUSE TYPES OF A WAREHOUSE

GOALS OF A WAREHOUSE

INTRODUCTION TO DIMENSION MODELING

BUSINESS DIMENSIONAL LIFE CYCLE

DIMENSIONAL MODELING VOCABULARY

SLOWLY CHANGIND DIMENSIONS (SCDs)

MODELLING TECHNIQUES

STAR SCHEMA Vs SNOWFLAKE SCHEMA

INTRODUCTION TO OBIEE

OBIEE UNIFIED STRUCTURE

WHY OBIEE?

OBIEE CAPABILITIES

INTRODUCTION TO BI APPS

Q & A SESSION


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INTRODUCTION TO A DATA WAREHOUSE

A data warehouse is a relational database that is designed for query and

analysis rather than for transaction processing

It usually contains historical data derived from transaction data, and also

can include data from different source systems

It separates analysis workload from transaction workload and enables an

organization to analyze their data for effective Decision making

A data warehouse sources its data from the main operational systems but

performs its own processing and stores the data efficiently to allow the data to

be presented in the most usable format.


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CHARACTERISTICS OF DATA WAREHOUSE

Subject oriented

Integrated

Non volatile

Time Variant


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TYPES OF DATA WAREHOUSE

Enterprise Data Warehouse

Includes data from numerous systems

Includes both Summarized and Detailed Data

Can be Terrabytes of Data

Data Mart

Includes only Subset of any Corporate Data (I.e business Unit or Department)

Includes both Summarized and Detailed Data

Avg industry size < = 100 GB of data

Operational Data store (ODS)

Contains Structured Data from generated directly from transaction Systems

Very little or no Summarized or historical Data

Meets day to day operational user needs for ad hoc query Analysis


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Architecture of a Data Warehouse with a

Staging Area and Data Marts

Architecture of a Data Warehouse with a

Staging Area and Data Marts


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GOALS OF A DATA WAREHOUSE

The data warehouse must make an organizations information easily accessible

The data warehouse must present the organizations information consistently.

The data warehouse must be adaptive and resilient to change.

The data warehouse must be a secured that protects our information

assets.

The data warehouse must serve as the foundation for improved decision

making.

The business community must accept the data warehouse if it is to be

deemed successful.


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INTRODUCTION TO DIMENSIONAL MODELING

What is Dimensional Modeling about ?

A technique for designing databases in order to support

performance dashboards, reporting, and business data analysis

A technique for designing databases around measurable business

processes

A data modeling approach that stresses ease of use andperformance


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THE BUSINESS DIMENSIONAL LIFECYCLE

Technical

Architecture

Design

Product

Selection &

Installation

End-User

Application

Specification

End-User

Application

Development

Project

Planning

Business

Requirement

Definition

Deployment

Maintenance

and

Growth

Project Management

Dimensional

Modeling

Physical

Design

Data Staging

Design &

Development


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DIMENSIONAL MODELING VOCABULARY

The most common terms used : Dimensions

Facts

Measures

Aggregates

Slowly Changing Dimensions

Conformed Dimensions


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SLOWLY CHANGING DIMENSIONS - APPROACHES

Type I overwrite changed attributes

Type II mark current row end date and add new row (Type II

rows have two date attributes, i.e. RowEffectiveBeginDate and

RowEffectiveEndDate. Both attributes are stored as date data types.)

Type III track changes by including attributes such as

OriginalAddress, CurrentAddress


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TYPES OF MODELING

Star Schema

The star Schema is perhaps the simplest data warehouse schema.

It is called a star schema because the entity-relationship diagram of this

schema resembles a star, with points radiating from a central table. Thecenter of the star consists of a large fact table and the points of the star

are the dimension tables.

A star query is a join between a fact table and a number of dimension

tables. Each dimension table is joined to the fact table using a primarykey to foreign key join, but the dimension tables are not joined to each

other


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TYPES OF MODELING (Contd..)

SnowFlake Schema

The snowflake schema is a more complex data warehouse model

than a star schema, and is a type of star schema. It is called a snowflake

schema because the diagram of the schema resembles a snowflake.Snowflake schemas normalize dimensions to eliminate redundancy.

That is, the dimension data has been grouped into multiple tables

instead of one large table


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TYPES OF MODELING (Contd..)

Star Schema Example

SnowFlake Schema Example


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WHEN SNOWFLAKE IS OK?

When used as a sub dimensionThe data in the sub dimension is related to the

dimension are at different levels of granularity

The data load times for the data are differentExamples:

County and state

District and region

Ship and battle group


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SNOWFLAKE Vs STAR SCHEMA


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INTRODUCTION TO OBIEE

Oracle Business Intelligence Enterprise Edition (OBIEE)

Oracle Business Intelligence Suite Enterprise Edition (Oracle

BI EE) is a comprehensive suite of enterprise BI products that

delivers a full range of analysis and reporting capabilities.

Oracle BI EE has a unified , highly Scalable and modern

Architecture and provides intelligence and analytics from data

spanning across various Sources and Applications.


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OBIEE UNIFIED INFRASTRUCTURE

InteractiveDashboards

Reporting &Publishing

Ad-hocAnalysis

MS OfficePlug-in

DisconnectedAnalytics

Proactive Alerts

Oracle

BI Server

Multidimensional Calculation and Integration Engine

Intelligent Request Generation and Optimized Data Access Services

OLTP & ODSSystems

Data WarehouseData Mart

SAP, OraclePeopleSoft, Siebel,

Custom Apps

FilesExcelXML

BusinessProcess


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WHY OBIEE?

Oracle

BI Server



Simplified, powerful and Scalable Intelligence Suite

Simplified Business Logical view

Advanced calculation Engine

Extremely Scalable and good performance

Optimized and Distributed Data Access

Enables Consistency, Security, Reuse, Flexibility


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MODEL ONCE , DEPLOY EVERYWHERE

Oracle

BI Server



OBIEE has great advantage due to its simplified model . OBIEEcan me modeled once in one environment and can be deployed

everywhere achieving the following

Information Consistency

Information Availability

Quick user Adaptability

Easy Migration of code (File Structures)


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OBIEE DELIVERY CAPABILITIES

Oracle

BI Server



OBIEE has lot of Built in applications which can satisfy all thebusiness needs in a very efficient and timely manner

Interactive dashboards

Answers

Delivers

BI Publisher

Disconnected AnalyticsBriefing Books


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SAMPLE DASHBOARDS

Oracle

BI Server




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PRE INTEGRATED WITH ORACLE SOLUTIONS

Oracle

BI Server



Gives more insight and value from Oracle Applicationswith prebuilt BI Apps based on OBIEE

Integrate OBIEE with the Oracle Applications

(CRM,ERP etc) and drill through from BI to Oracle

Applications via Action Links

Pre-packaged Application DAC which gives the

capability of managing all the ETL solutions from a

Single Console and eases the maintenance .


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INTRODUCTION TO BI APPS

Oracle

BI Server



BI APPS gives the Prebuilt integrated solutions to extract data

and build OBIEE reports . The Pre Built Solutions are

BI Content ( Pre Built Reports)

Metadata (Pre Built Rpd File)

ETL ( Pre Built Mappings for Siebel,Oracle Apps,SAP etc )

Warehouse ( Pre Built Warehouse table definitions)

DAC ( Pre Built Metadata to control the data)


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ORACLE BI APPLICATIONS

Oracle

BI Server



Sales MarketingSupply

ChainFinancials

Human

Resources

Oracle BI Suite EE

Ad-hocAnalysis

Proactive

Detectionand Alerts

MS OfficePlug-inReporting &PublishingInteractiveDashboards DisconnectedAnalytics WebServices

IVR, ACD,

CTI,Flat Files

and other

Data

Sources

Siebel,

People

Soft,oracle

Applications,

SAP

ORACLE BI APPLICATIONS

Pre Packaged

ETL maps

DW

Universal

Adapters


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SUMMARY

Oracle

BI Server

Model once, deploy anywhere

Hot Pluggable

Pre Integrated with oracle Applications

Common enterprise Information Model

Industry leader

Easy to use, Maintain and Migrate

Easy user Adoption


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SUMMARY

Oracle

BI Server Q & A


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SUMMARY

Oracle

BI Server THANK YOU

Day1 Free Seminar

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