Data Warehouse Toolkit Introduction. Data Warehouse Bill Inmon's paradigm: Data warehouse is one part of the overall business intelligence system. An.

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Presentation transcript:

Data Warehouse Toolkit Introduction

Data Warehouse Bill Inmon's paradigm: Data warehouse is one part of the overall business intelligence system. An enterprise has one data warehouse, and data marts source their information from the data warehouse. In the data warehouse, information is stored in 3rd normal form. Ralph Kimball's paradigm: Data warehouse is the conglomerate of all data marts within the enterprise. Information is always stored in the dimensional model.

Characteristics of DW/BI High profile and high impact High risk Highly political Requires sophisticated and complex data gathering Requires intensive user access, training and support Will be high maintenance

DW Lifecycle Principles Focus on the business Build an information infrastructure Deliver in meaningful increments: six to twelve month timeframes Deliver the entire solution: query and display tools in addition to the database

DW Lifecycle Dimensional Modeling Project Planning Business Requirements Definition Physical Design ETL Design & Development Deployment Growth Maintenance BI Application Specification BI Application Development Technical Architecture Design Product Selection & Installation Project Management

Key Terms Data warehouse Dimensional model Normalized model Relational database OLAP (online analytical processing) ETL (extraction, transformation, load) Business Intelligence (BI) application Data mining model Ad hoc query

Project Roles Business Sponsor* – approves and pays for the project DW/BI manager – organizational DW sponsor Project manager – day to day leader Business project lead – business community interface Business systems analyst – business requirements Data modeler – detailed data analysis Systems Architect – system components

Specialized Roles Data warehouse DBA OLAP designer ETL system developer DW/BI management tools developer BI applications developer

General IT roles Data steward Security manager BI portal content manager DW/BI educator Relational database administrator OLAP DBA Compliance manager Metadata manager Data mining analyst User support personnel