Justification: The indexed nested loop join algorithm which is described in the Section 15.5.3 is inefficient because, If there are many tuples in the inner relation with the same va...

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Answer 1

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Chapter 15, Problem 4PE

Explanation of Solution

Justification:

The indexed nested loop join algorithm which is described in the Section 15.5.3 is inefficient because,

If there are many tuples in the inner relation with the same va...

Explanation of Solution

Reducing the cost of retrieving tuples of the inner relation:

To reduce this cost the user can perform a join of the outer relation tuples with just the secondary index leaf e...

Explanation of Solution

Efficient condition:

Hybrid merge join needs the outer relation to be sorted.

The above mentioned algorithm does not have this requirement, but for each tuple in the outer relation it needs...

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Check out a sample textbook solution

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Answer 2

Expert Solution & Answer

Chapter 15, Problem 4PE

Explanation of Solution

Justification:

The indexed nested loop join algorithm which is described in the Section 15.5.3 is inefficient because,

If there are many tuples in the inner relation with the same va...

Explanation of Solution

Reducing the cost of retrieving tuples of the inner relation:

To reduce this cost the user can perform a join of the outer relation tuples with just the secondary index leaf e...

Explanation of Solution

Efficient condition:

Hybrid merge join needs the outer relation to be sorted.

The above mentioned algorithm does not have this requirement, but for each tuple in the outer relation it needs...

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 3

Expert Solution & Answer

Chapter 15, Problem 4PE

Explanation of Solution

Justification:

The indexed nested loop join algorithm which is described in the Section 15.5.3 is inefficient because,

If there are many tuples in the inner relation with the same va...

Explanation of Solution

Reducing the cost of retrieving tuples of the inner relation:

To reduce this cost the user can perform a join of the outer relation tuples with just the secondary index leaf e...

Explanation of Solution

Efficient condition:

Hybrid merge join needs the outer relation to be sorted.

The above mentioned algorithm does not have this requirement, but for each tuple in the outer relation it needs...

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

Expert Solution & Answer

Chapter 15, Problem 4PE

Explanation of Solution

Justification:

The indexed nested loop join algorithm which is described in the Section 15.5.3 is inefficient because,

If there are many tuples in the inner relation with the same va...

Explanation of Solution

Reducing the cost of retrieving tuples of the inner relation:

To reduce this cost the user can perform a join of the outer relation tuples with just the secondary index leaf e...

Explanation of Solution

Efficient condition:

Hybrid merge join needs the outer relation to be sorted.

The above mentioned algorithm does not have this requirement, but for each tuple in the outer relation it needs...

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 5

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Answer 6

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Answer 7

Chapter 15, Problem 4PE

Explanation of Solution

Justification:

The indexed nested loop join algorithm which is described in the Section 15.5.3 is inefficient because,

If there are many tuples in the inner relation with the same va...

Explanation of Solution

Reducing the cost of retrieving tuples of the inner relation:

To reduce this cost the user can perform a join of the outer relation tuples with just the secondary index leaf e...

Explanation of Solution

Efficient condition:

Hybrid merge join needs the outer relation to be sorted.

The above mentioned algorithm does not have this requirement, but for each tuple in the outer relation it needs...

Answer 8

Chapter 15, Problem 4PE

Explanation of Solution

Justification:

The indexed nested loop join algorithm which is described in the Section 15.5.3 is inefficient because,

If there are many tuples in the inner relation with the same va...

Answer 9

Chapter 15, Problem 4PE

Explanation of Solution

Justification:

The indexed nested loop join algorithm which is described in the Section 15.5.3 is inefficient because,

If there are many tuples in the inner relation with the same va...

Answer 10

Explanation of Solution

Reducing the cost of retrieving tuples of the inner relation:

To reduce this cost the user can perform a join of the outer relation tuples with just the secondary index leaf e...

Answer 11

Explanation of Solution

Reducing the cost of retrieving tuples of the inner relation:

To reduce this cost the user can perform a join of the outer relation tuples with just the secondary index leaf e...

Answer 12

Explanation of Solution

Efficient condition:

Hybrid merge join needs the outer relation to be sorted.

The above mentioned algorithm does not have this requirement, but for each tuple in the outer relation it needs...

Answer 13

Explanation of Solution

Efficient condition:

Hybrid merge join needs the outer relation to be sorted.

The above mentioned algorithm does not have this requirement, but for each tuple in the outer relation it needs...

Answer 14

Expert Solution & Answer

Answer 15

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Answer 16

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Answer 17

Ch. 15 - Prob. 1PE Ch. 15 - Prob. 2PE Ch. 15 - Prob. 3PE Ch. 15 - Prob. 4PE Ch. 15 - Prob. 5PE Ch. 15 - Prob. 6PE Ch. 15 - Prob. 7PE Ch. 15 - Prob. 8PE Ch. 15 - Prob. 9PE Ch. 15 - Prob. 10PE

Justification: The indexed nested loop join algorithm which is described in the Section 15.5.3 is inefficient because, If there are many tuples in the inner relation with the same va...

Explanation of Solution

Justification: The indexed nested loop join algorithm which is described in the Section 15.5.3 is inefficient because, If there are many tuples in the inner relation with the same va...

Explanation of Solution

Reducing the cost of retrieving tuples of the inner relation: To reduce this cost the user can perform a join of the outer relation tuples with just the secondary index leaf e...

Explanation of Solution

Efficient condition: Hybrid merge join needs the outer relation to be sorted. The above mentioned algorithm does not have this requirement, but for each tuple in the outer relation it needs...

Want to see the full answer?

Chapter 15 Solutions

Justification:

The indexed nested loop join algorithm which is described in the Section 15.5.3 is inefficient because,

If there are many tuples in the inner relation with the same va...

Reducing the cost of retrieving tuples of the inner relation:

To reduce this cost the user can perform a join of the outer relation tuples with just the secondary index leaf e...

Efficient condition:

Hybrid merge join needs the outer relation to be sorted.

The above mentioned algorithm does not have this requirement, but for each tuple in the outer relation it needs...