Database Systems MCQs - Chapter 10

Formal Relational Query Languages Multiple Choice Questions PDF Download - 5

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Formal Relational Query Languages Questions & Answers PDF Download: MCQ Quiz 5

MCQ 21: Representation of projection can be made by the uppercase Greek letter

A) alpha

B) pi

C) sigma

D) gamma

MCQ 22: The join operation that is known to work in a manner similar to the natural join operation, is

A) Outer join

B) Full join

C) Inner join

D) Combine join

MCQ 23: The natural join is a

A) Unary operation

B) Structural operation

C) Non structural operation

D) Binary operation

MCQ 24: A special case of multisets, which have only one copy of each element, is known to be

A) Sets

B) Elements

C) Associator

D) Aggregator

MCQ 25: Instead of rename operation it is possible for attributes to use a

A) Positional notation

B) Nonpositional notation

C) Fixed notation

D) Logical notation

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