Database - Data Modeling with ER Model
Exercise : Data Modeling with ER Model - True or False
- Data Modeling with ER Model - General Questions
- Data Modeling with ER Model - True or False
An ID-dependent entity is an entity whose identifier is a composite identifier where no portion of the composite identifier is an identifier of another entity.
A ternary relationship is so called because in contains two entities and one association between them.
All instances of an entity class have the same attributes.
A minimum cardinality is the minimum number of entity instances that may participate in a relationship instance.
An attribute describes the entity's characteristics.