DBMS-Entity Relationship (E-R) Model - Practice Questions

Question 1

The attribute composed of a single component with an independent existence is called:

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Question 2

E-R model was first introduced by Dr. E.F. Codd.

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Question 3

A composite attribute is composed of:

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Question 4

An entity type that is not existence-dependent on some other entity type is called a strong entity type

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Question 5

In E-R diagram, if the attribute is simple or single-valued then they are connected using a single line.

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Question 6

A relationship is an association among two or more entities that is of interesdt to the enterprise.

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Question 7

An attribute is property of an entity or a relationship type.

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Question 8

Which data model is independent of both hardware and DBMS?

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Question 9

A relatonship between the instances of a single entity type is called.

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Question 10

An entity type does not have an independent existence

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