Database Management System MCQs – Practice Test 9 (Chapter 11)

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Relational Algebra & Calculus MCQs – Practice Test 9 PDF Download

MCQ 41: The operator which is useful for a single relation is classified as:

comparative operator
unary operator
ternary operator
functional clause operator

MCQ 42: The types of quantifiers are:

universal quantifier
existential quantifier
local quantifier
both a and b

MCQ 43: The single relational algebra expression can be used in sequence of operations by:

nesting entities
nesting the attribute
nesting the operations
nesting the elements

MCQ 44: In relational calculus, the expression which guarantees finite number of tuples is classified as:

declarative expression
stable expression
unsafe expression
safe expression

MCQ 45: The data structure in the form of tree to correspond to relational algebra expression is classified as:

relation tree
attribute tree
entity tree
query tree

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