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MCQ

Q.

. In an E-R diagram attributes are represented by

A

rectangle

B

square

C

ellipse

D

triangle

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1.

_____________ express the number of entities to which another entity can be associated via a relationship set.

A

Mapping Cardinality

B

Relational Cardinality

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D

None of the mentioned

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2.

A set of possible data values is called

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attribute

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degree

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tuple

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domain

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3.

The refinement from an initial entity set into successive levels of entity subgroupings represents a ________ design process in which distinctions are made explicit.

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Bottom-up

C

Top-down

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Drop Table cannot be used to drop a table referenced by a _________ constraint.

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Which relationship is used to represent a specialization entity?

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ISA

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AIS

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ONIS

D

WHOIS

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