Database Systems Practice Test 139
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Advanced Aggregation Features Quiz with Answers PDF Download: MCQs 139
Ranking operation is achieved over the partitions of the
- Subprocesses
- Applications
- Data
- Recursions
The operation that allows combination of information from any two relations, is known as
- Selection
- Projection
- Exception
- Cartesian product
All aggregate functions for their input collection, except count(*) ignore the
- Strings
- Null value
- 0s
- 1s
The term that says what actions to carry out under what conditions, is known as the
- Data logic
- Business logic
- Computing logic
- File logic
Advanced optimization techniques includes optimization of updates, multiquery optimization and
- Top-K optimization
- Join minimization
- Parametric query optimization
- All of the Above
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Advanced Aggregation Features Practice Tests
- A schema can be defined by languages
- Clause that permits a view definition to be used in multiple places within a query, is known to be
- Declaring an attribute to be of a particular domain acts as a
- Sorting in database systems is important because of major reasons of type
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