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Database Systems Practice Test 9

Nested Subqueries Quiz Questions and Answers PDF - 9

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Nested Subqueries Questions and Answers PDF Download: Quiz 9

MCQ 41: The exist construct returns true as a value, if the argument subquery is

A) Empty
B) Not empty
C) Exist
D) Not exist

MCQ 42: The preface that converts the DML statements to normal procedure calls in the host language, is known as

A) DML pre-executor
B) DML executor
C) DML compiler
D) DML precompile

MCQ 43: If any of the input values is null, the result of an arithmetic expression, would be

A) 0
B) Null
C) 1
D) Undefined

MCQ 44: Mapping cardinalities are useful in describing

A) Unary relationships
B) Binary relationships
C) Composite relationships
D) Simple relationships

MCQ 45: The problem of being unable to represent some information, can be solved by introducing

A) Pointers
B) Null values
C) 0 value
D) Null pointer

Database Systems Exam Prep Tests

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Database Management System App (Android & iOS)

Database Management System App (Android & iOS)

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Computer Networks App (Android & iOS)

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Digital Image Processing App (Android & iOS)