<< Click to Display Table of Contents >>

Grouping Entities

Top Previous Next

Normally, the entities within an ER diagram appear alike. Even though tables may have defined relationships to each other, they are not shown by logical groupings.

You can define several logical entity groupings and assign each entity to one of them.

Example (logical groupings):

Customer-related entities

Product-related entities

Other entities

We suggest that you indicate logical groupings by using different colors in the diagram. You can assign a particular color to each logical group.

ER Diagrammer uses a special algorithm to ascertain logical dependencies between entities. It assigns each table to one of the following groups:

Foreign schema tables (gray)

Most significant tables (5 groups, 5 pastel colors)

Other tables (white).

This color assignment may be changed manually.