Database Systems Entrance Exam: Practice Test 14 (Chapter 10)

Formal Relational Query Languages Multiple Choice Questions (MCQ) PDF Download - 14

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Formal Relational Query Languages MCQ with Answers PDF Download: Quiz 14

MCQ: 66

In domain relational calculus, all values that appear in tuples of the expression are values from

Views
Domain
Relation
Aggregation

MCQ: 67

A tuple-relational-calculus expression may generate a/an

Finite relation
Infinite relation
Invalid relation
Composite relation

MCQ: 68

A query expression in the tuple relational calculus is done as

{p| P(t)}
{p| t(p)}
{t| P(t)}
{p| t(t)}

MCQ: 69

We can avoid the loss of information by performing

Natural join
Outer join
Full join
Inner join

MCQ: 70

At the result of the left outer join, the present information is from the

Right relation
Left relation
Combination of relations
Left and right relation

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