a. Requirement of old-value part of an update log record: When deferred modification scheme is used, almost all write operations associated with a transaction are deferred till it commits. When deferred modification technique is used, the old value part of an update log record is not required a...

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Answer 1

Expert Solution & Answer

Chapter 19, Problem 5PE

Explanation of Solution

a.

Requirement of old-value part of an update log record:

When deferred modification scheme is used, almost all write operations associated with a transaction are deferred till it commits.

When deferred modification technique is used, the old value part of an update log record is not required a...

Explanation of Solution

b.

Modifying the redo-phase of recovery:

With the given modifications, the redo-phase have to be modified as given below:

...

Explanation of Solution

c.

Implementing a data item read:

To implement a data item read in the given case efficiently;

First a read request is issued on the local memory of the transaction...

Explanation of Solution

d.

Problem arisen with the given technique:

When a single transaction performs a large number of ...

Expert Solution & Answer

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Check out a sample textbook solution

See solution

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Answer 2

Expert Solution & Answer

Chapter 19, Problem 5PE

Explanation of Solution

a.

Requirement of old-value part of an update log record:

When deferred modification scheme is used, almost all write operations associated with a transaction are deferred till it commits.

When deferred modification technique is used, the old value part of an update log record is not required a...

Explanation of Solution

b.

Modifying the redo-phase of recovery:

With the given modifications, the redo-phase have to be modified as given below:

...

Explanation of Solution

c.

Implementing a data item read:

To implement a data item read in the given case efficiently;

First a read request is issued on the local memory of the transaction...

Explanation of Solution

d.

Problem arisen with the given technique:

When a single transaction performs a large number of ...

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 3

Expert Solution & Answer

Chapter 19, Problem 5PE

Explanation of Solution

a.

Requirement of old-value part of an update log record:

When deferred modification scheme is used, almost all write operations associated with a transaction are deferred till it commits.

When deferred modification technique is used, the old value part of an update log record is not required a...

Explanation of Solution

b.

Modifying the redo-phase of recovery:

With the given modifications, the redo-phase have to be modified as given below:

...

Explanation of Solution

c.

Implementing a data item read:

To implement a data item read in the given case efficiently;

First a read request is issued on the local memory of the transaction...

Explanation of Solution

d.

Problem arisen with the given technique:

When a single transaction performs a large number of ...

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

Expert Solution & Answer

Chapter 19, Problem 5PE

Explanation of Solution

a.

Requirement of old-value part of an update log record:

When deferred modification scheme is used, almost all write operations associated with a transaction are deferred till it commits.

When deferred modification technique is used, the old value part of an update log record is not required a...

Explanation of Solution

b.

Modifying the redo-phase of recovery:

With the given modifications, the redo-phase have to be modified as given below:

...

Explanation of Solution

c.

Implementing a data item read:

To implement a data item read in the given case efficiently;

First a read request is issued on the local memory of the transaction...

Explanation of Solution

d.

Problem arisen with the given technique:

When a single transaction performs a large number of ...

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 5

Expert Solution & Answer

Answer 6

Expert Solution & Answer

Answer 7

Chapter 19, Problem 5PE

Explanation of Solution

a.

Requirement of old-value part of an update log record:

When deferred modification scheme is used, almost all write operations associated with a transaction are deferred till it commits.

When deferred modification technique is used, the old value part of an update log record is not required a...

Explanation of Solution

b.

Modifying the redo-phase of recovery:

With the given modifications, the redo-phase have to be modified as given below:

...

Explanation of Solution

c.

Implementing a data item read:

To implement a data item read in the given case efficiently;

First a read request is issued on the local memory of the transaction...

Explanation of Solution

d.

Problem arisen with the given technique:

When a single transaction performs a large number of ...

Answer 8

Chapter 19, Problem 5PE

Explanation of Solution

a.

Requirement of old-value part of an update log record:

When deferred modification scheme is used, almost all write operations associated with a transaction are deferred till it commits.

When deferred modification technique is used, the old value part of an update log record is not required a...

Answer 9

Chapter 19, Problem 5PE

Explanation of Solution

a.

Requirement of old-value part of an update log record:

When deferred modification scheme is used, almost all write operations associated with a transaction are deferred till it commits.

When deferred modification technique is used, the old value part of an update log record is not required a...

Answer 10

Explanation of Solution

b.

Modifying the redo-phase of recovery:

With the given modifications, the redo-phase have to be modified as given below:

...

Answer 11

Explanation of Solution

b.

Modifying the redo-phase of recovery:

With the given modifications, the redo-phase have to be modified as given below:

...

Answer 12

Explanation of Solution

c.

Implementing a data item read:

To implement a data item read in the given case efficiently;

First a read request is issued on the local memory of the transaction...

Answer 13

Explanation of Solution

c.

Implementing a data item read:

To implement a data item read in the given case efficiently;

First a read request is issued on the local memory of the transaction...

Answer 14

Explanation of Solution

d.

Problem arisen with the given technique:

When a single transaction performs a large number of ...

Answer 15

Explanation of Solution

d.

Problem arisen with the given technique:

When a single transaction performs a large number of ...

Answer 16

Expert Solution & Answer

Answer 17

Expert Solution & Answer

Answer 18

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Check out a sample textbook solution

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Answer 19

Ch. 19 - Prob. 1PE Ch. 19 - Prob. 2PE Ch. 19 - Prob. 3PE Ch. 19 - Prob. 4PE Ch. 19 - Prob. 5PE Ch. 19 - Prob. 6PE Ch. 19 - Prob. 7PE Ch. 19 - Prob. 8PE Ch. 19 - Prob. 9PE Ch. 19 - Prob. 10PE

a. Requirement of old-value part of an update log record: When deferred modification scheme is used, almost all write operations associated with a transaction are deferred till it commits. When deferred modification technique is used, the old value part of an update log record is not required a...

Explanation of Solution

a. Requirement of old-value part of an update log record: When deferred modification scheme is used, almost all write operations associated with a transaction are deferred till it commits. When deferred modification technique is used, the old value part of an update log record is not required a...

Explanation of Solution

b. Modifying the redo-phase of recovery: With the given modifications, the redo-phase have to be modified as given below: ...

Explanation of Solution

c. Implementing a data item read: To implement a data item read in the given case efficiently; First a read request is issued on the local memory of the transaction...

Explanation of Solution

d. Problem arisen with the given technique: When a single transaction performs a large number of ...

Want to see the full answer?

Chapter 19 Solutions

b.

Modifying the redo-phase of recovery:

With the given modifications, the redo-phase have to be modified as given below:

...

c.

Implementing a data item read:

To implement a data item read in the given case efficiently;

First a read request is issued on the local memory of the transaction...

d.

Problem arisen with the given technique:

When a single transaction performs a large number of ...