Chapter 8

Foundational Data Modeling


A well-designed data model is the cornerstone to building business intelligence (BI) and data warehousing (DW) applications that provide significant business value. Effective data modeling results in transforming data into an enterprise information asset that is consistent, comprehensive, and current. Data is transformed from operational or source systems into a data warehouse, data marts, or online analytical processing (OLAP) cubes for analysis. Entity-relationship (ER) modeling (also referred to in the industry as relational modeling) is one of two logical data modeling approaches. There are three levels of data models: conceptual, logical, and physical. The modeling workflow includes gathering business ...

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