Question

An entity type whose existence depends on another entity type is called a _entity. variant O codependent weak strong An attribute that must have a value for every entity (or relationship) instance is a(n): O optional attribute. O composite attribute. multivalued attribute. required attribute.

Answer 1

An attribute is a quality or feature of an entity type that is important to the organization.

What is a relationship between two entities known as when it is maintained?

Association is kept inside a single entity in a unary relationship. Relationship between instances of the same entity set is known as a recursive relationship. Relationship between two entities in a binary form.

when one entity depends on another for its existence.

An entity that depends on another entity for its existence is considered weak. Weakness is applied to all entities that depend on ID. But there are other weak entities that are independent of ID. The identifier of the weak child object does not contain the parent's identifier.

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