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

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CHAPTER 9

Logical Data Models

What does business need?             

Forget the technology

Enter logical

The highlighted row in Table 9.1 shows the focus of this chapter, which is the logical data model (LDM).

Table 9.1 The Logical Data Model is the focus of this chapter

 

Relational

Dimensional

Conceptual Data Model (CDM)

One-pager on business rules

One-pager on navigation

Logical Data Model (LDM)

Detailed business solution on business rules

Detailed business solution on navigation

Physical Data Model (PDM)

Detailed technical solution on business rules

Detailed technical solution on navigation

 

A LDM takes the business need defined on a conceptual data model down to the next level of a business solution. That is, once you understand ...

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