Database Systems MCQs - Chapter 10

Formal Relational Query Languages Quiz Questions and Answers PDF - 3

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Formal Relational Query Languages Questions & Answers PDF Download: MCQ Quiz 3

MCQ 11: The Cartesian product operation concatenates the

Tuples of the two relations
Instances of the two relations
Attributes of the two relations
Renames of the two relations

MCQ 12: The outer join basically have forms of operation of

2 types
3 types
4 types
5 types

MCQ 13: The operation that works like assignment in a programming language, is said to be

Union operator
Assignment operator
Natural join operator
Set difference operator

MCQ 14: A natural join allows combination of certain selections and a Cartesian product into

One operation
Two operations
Multiple operations
No order operation

MCQ 15: The expression r -s represents a

Arity
Unity
Projection
Set-difference

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