Q4. Entity Relationship Modelling

• An (a)   Diagram is a type of flowchart that illustrates how “entities” such as people, objects or concepts relate to each other within a system.

(a)   represent Entities in the ER Model.

(a)   represent Attributes in the ER Model.

(a)   represent Relationships among Entities.

(a)   represent attributes to entities and entity sets with other relationship types.

• (a)   represent Multi-Valued Attributes.

(a)   represents a Weak Entity.

An (a)   may be an object with a physical existence.

(a)   are the properties that define the entity type.

• A (a)   represents the association between entity types.