The entity relationship diagram shows the entity types and relationships between these entity types for the area defined in the system scope. The attribute types associated with each entity type are also documented. For complex situations, an Entity Type Decomposition Diagram may also be made. For example:
See also: Initial Entity Relationship Diagram.
The formal definition and description of an entity type and its properties. For complex situations, an entity life cycle subtype hierarchy may also be included.
Properties That Can Be Recorded
* Entity type name
* Identifier(s)
* Definition
* Synonym(s) (if any)
* Attribute types
* Parent entity type name (if this is a subtype)
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Section Overview : Attribute Type and Domain Definition Technique
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