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Mohamad Eskandarane Questions
11022 Questions
A view whose contents are computed and stored is called as _______
Database
2022-07-14
Answers
30
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40
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1
387
The process of replacing a nested query with a query with a join is known as _________
Database
2022-07-14
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30
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418
What technique is used for the evaluation of a query with a nested sub query?
Database
2022-07-14
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30
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435
Caching and reuse of query plans is called as ________
Database
2022-07-14
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465
The join orders where the right operand of each join is in one of the initial relations are called as ________
Database
2022-07-14
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431
Optimizers use __________ to reduce the cost of optimization
Database
2022-07-14
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30
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402
State true or false: Making multiple copies of the same sub-expressions must be avoided
Database
2022-07-14
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30
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407
The rule that allows transformation of a logical operation to a physical operation is called
Database
2022-07-14
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30
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452
A particular sort order is said to be _________ sort order if it could be useful for a later operation
Database
2022-07-14
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30
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375
What is the disadvantage of cost based optimizers?
Database
2022-07-14
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30
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440
A ________ explores the space of all query evaluation plans that are equivalent to a given query
Database
2022-07-14
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392
Size estimation can be done for which of the following processes?
Database
2022-07-14
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410
The size of a _____ is simply V(A,r) where r is the relation and A is a distinct value
Database
2022-07-14
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30
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40
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30
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392
Total:
11022
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