Database Systems Practice Test 9
Nested Subqueries Quiz Questions and Answers PDF Download - 9
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The Quiz: The exist construct returns true as a value, if the argument subquery is; "Nested Subqueries" App Download [Free] with answers: not empty, empty, not exist, and exist for online degrees. Learn Introduction to SQL Questions and Answers, Apple eBook to download free sample to learn computer science courses.
Nested Subqueries Questions and Answers PDF Download: MCQ 9
The exist construct returns true as a value, if the argument subquery is
- Empty
- Not empty
- Exist
- Not exist
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
If any of the input values is null, the result of an arithmetic expression, would be
- 0
- Null
- 1
- Undefined
Mapping cardinalities are useful in describing
- Unary relationships
- Binary relationships
- Composite relationships
- Simple relationships
The problem of being unable to represent some information, can be solved by introducing
- Pointers
- Null values
- 0 value
- Null pointer
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Computer Networks Practice Questions
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