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

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CHAPTER 8

Conceptual Data Models

Need the Big Picture?

No common definitions?

Hero, build a CDM!

The highlighted row in Table 8.1 shows the focus of this chapter – the conceptual data model (CDM).

Table 8.1 The Conceptual 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 CDM shows the key concepts in a particular area and how these concepts interact with each other. This chapter defines a concept, followed by an explanation ...

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