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DBMS Double-Pipelined Join Algorithm MCQs

DBMS Double-Pipelined Join Algorithm MCQs: This section contains multiple-choice questions and answers on Double-Pipelined Join Algorithm in DBMS.
Submitted by Anushree Goswami, on May 31, 2022

1. The ____ is a blocking operation that must be completed before it can output any results. Its input must be fetched completely and its output must be partitioned.

1. Join
2. Partition Join
3. Nested-Join
4. Hash-Join

Answer: D) Hash-Join

Explanation:

The hash-join is a blocking operation that must be completed before it can output any results. Its input must be fetched completely and its output must be partitioned.

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2. Once it receives tuples in the outer relation, the ____ nested loop can output the resulting tuples.

1. Indexed
2. Non-indexed
3. Indent
4. Non-indent

Answer: A) Indexed

Explanation:

Once it receives tuples in the outer relation, the indexed nested loop can output the resulting tuples.

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3. For the implementation of the pipeline, the ___ Pipelined Join Method is used, which is also known as the Implementation of the pipeline algorithm.

1. Single
2. Double
3. Triple
4. None

Answer: B) Double

Explanation:

For the implementation of the pipeline, the Double Pipelined Join Method is used, which is also known as the Implementation of the pipeline algorithm.

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4. As a result of the double-pipelined join technique, the inputs can also exceed the memory size, which is to say that their size is ____ than the memory size.

1. Smaller
2. Larger
3. Tiny
4. Lighter

Answer: B) Larger

Explanation:

As a result of the double-pipelined join technique, the inputs can also exceed the memory size, which is to say that their size is larger than the memory size.

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5. Once the available memory is ____, the double-pipelined join method can continue to operate as usual.

1. Empty
2. Full
3. Half Empty
4. Half Full

Answer: B) Full

Explanation:

Once the available memory is full, the double-pipelined join method can continue to operate as usual.

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6. In case r and s are connected through a pipeline with ___ indices, this is known as double-pipelined hash joining.

1. Hash
2. Index
3. Pipeline
4. None

Answer: A) Hash

Explanation:

In case r and s are connected through a pipeline with hash indices, this is known as double-pipelined hash joining.

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7. Hash-join operations are blocking operations that result in __ output(s).

1. No
2. One
3. Two
4. Multiple

Answer: A) No

Explanation:

Hash-join operations are blocking operations that result in no output.

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