Represents entity types, their identifiers and database attributes, and relationships with participation and cardinality constraints.
An entity type whose instances inherit the identifier, database attributes and relationships of a more general entity type. A total disjoint specialization requires every parent instance to belong to exactly one listed subtype.
A diagram of an entity-relationship model, including relationship cardinalities and, when needed, subtype and identification constraints.
Articles by others on the same topic
There are currently no matching articles.