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Data Modeling Made Simple with ER/Studio Data Architect by Steve Hoberman

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SECTION III

Conceptual, Logical, and Physical Data Models

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Section III explores the three different levels of models: conceptual, logical, and physical. A conceptual data model (CDM) represents the business need within a defined scope, a logical data model (LDM) the detailed business solution, and the physical data model (PDM) the detailed technical solution. Chapter 8 focuses on the CDM, Chapter 9 the LDM, and Chapter 10 the PDM.

In addition to these three levels of detail, there are also two different modeling mindsets: relational and dimensional. Relational data modeling is the process of capturing how the business works by precisely representing ...

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