1. Data Model Reference Guide
  2. General Entities

General Entities

The following figure shows the diagram conventions for general entities used in this guide. The conventions are as follows:

  • A mandatory relationship is illustrated by a solid line.

  • An optional relationship is illustrated by a dotted line.

  • A one-to-many-relationship (1:M) has a "tripod" on one end of the relationship line.

  • A many-to-many-relationship (M:M) has a "tripod" on both ends of the relationship line.

General Entity Relationship Diagram Conventions: This image is described in the surrounding text.