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Database Systems: Concepts, Design and Applications by S. K. Singh

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Chapter 7 Enhanced Entity-Relationship (EER) Model

State True/False

1.True
2.True
3.True
4.True
5.False
6.False
7.False
8.True
9.True
10.True
11.True
12.False
13.True
14.True
15.True
16.True
17.False
18.True
19.False
20.True
21.True
22.True.

 

Tick (✓) the Appropriate Answer

1.(a)
2.(d)
3.(a)
4.(b)
5.(a)
6.(d)
7.(d).

 

Fill in the Blanks

1.One-to-one (1:1)
2.Subtype, subset, supertype
3.Subtype, supertype
4.Enhanced Entity Relationship (EER) model
5.Redundancy
6.Shared subtype
7.Supertype (or superclass), specialization/generalization
8.Supertype, subclass, specialization/generalization
9.Mandatory
10.Optional
11.One
12.Attribute inheritance
13.‘d’, circle
14.‘o’, circle
15.Shared subtype
16.Generalization
17.Generalization
18.Enhanced Entity Relationship.

 

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