Question 1 :
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.
Question 2 :
A ternary relationship is so called because in contains two entities and one association between them.
Question 3 :
All instances of an entity class have the same attributes.
Question 4 :
A minimum cardinality is the minimum number of entity instances that may participate in a relationship instance.
Question 5 :
An attribute describes the entity's characteristics.