Database Systems MCQs - Chapter 4

Database Design and ER Model Multiple Choice Questions PDF Download - 5

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Database Design and ER Model Questions & Answers PDF Download: MCQ Quiz 5

MCQ 21: A relationship line may have an associated minimum and maximum

Values
Cardinalities
Range
Attributes

MCQ 22: In generalization, the higher-level entities are designated by the term

Strong entity set
Weak entity set
Superclass
Subclass

MCQ 23: The entity-relationship model is used to represent the conceptual design of the database at the level

First stage
Second stage
Third stage
Fourth stage

MCQ 24: Specifying whether or not an entity in the superclass set must belong to at least one of subclass sets within specialization, by the constraint type

Completeness constraint
Disjointness constraint
Overlapping constraint
Existence constraint

MCQ 25: In E-R diagrams, a weak entity set is represented via a

Rectangle
Diamond
Circle
Double diamonds

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