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Q4. Entity Relationship Modelling

Total questions: 15

Worksheet time: 15mins

Name
Class
Date
1.

  • 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.

2.

(a)   represent Entities in the ER Model.

3.

(a)   represent Attributes in the ER Model.

4.

(a)   represent Relationships among Entities.

5.

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

6.

  • (a)   represent Multi-Valued Attributes.

7.

(a)   represents a Weak Entity.

8.

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

9.

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

10.

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

11.

  • The number of times an entity of an entity set participates in a relationship set is known as (a)   .

12.

An attribute that can be derived from other attributes of the entity type is known as a (a)   attribute.

13.

An attribute consisting of more than one value for a given entity.

(a)  

14.

An attribute composed of many other attributes is called a (a)   attribute.

15.

The attribute which uniquely identifies each entity in the entity set is called the (a)   attribute.