Database Systems MCQs – Practice Test 14 (Chapter 10)

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Formal Relational Query Languages MCQ – Practice Test 14 PDF Download

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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