Nested Subqueries Practice Test PDF Download eBook p. 9
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"The exist construct returns true as a value, if the argument subquery is", nested subqueries Multiple Choice Questions (MCQ) with choices not empty, empty, exist, and not exist for online degree programs. Learn introduction to sql questions and answers with free online certification courses for online computer science engineering.
Trivia Quiz on Nested Subqueries PDF Download eBook
MCQ: The exist construct returns true as a value, if the argument subquery is
- Empty
- Not empty
- Exist
- Not exist
B
MCQ: The preface that converts the DML statements to normal procedure calls in the host language, is known as
- DML pre-executor
- DML executor
- DML compiler
- DML precompile
D
MCQ: If any of the input values is null, the result of an arithmetic expression, would be
- 0
- Null
- 1
- Undefined
B
MCQ: Mapping cardinalities are useful in describing
- Unary relationships
- Binary relationships
- Composite relationships
- Simple relationships
B
MCQ: The problem of being unable to represent some information, can be solved by introducing
- Pointers
- Null values
- 0 value
- Null pointer
B