Transaction: A transaction is a small set of changes which must be made to the database . The transaction done to the database may or may not affect the changes to the content of the database. The execution takes place as a single unit. Concurrency control: The process of ensuring the data which should be updated correctly and appropriately when multiple transactions are concurrently executed in DBMS (Database Management System) is termed as concurrency control. It coordinates the simultaneous transactions while preserving from deadlock. It ensures that one user work does not affect the other user’s work. There are two mechanism involved in concurrency control. They are, Optimistic concurrency control. Pessimistic concurrency control.

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Chapter 6, Problem 6.6RQ

Program Plan Intro

Transaction:

A transaction is a small set of changes which must be made to the database. The transaction done to the database may or may not affect the changes to the content of the database. The execution takes place as a single unit.

Concurrency control:

The process of ensuring the data which should be updated correctly and appropriately when multiple transactions are concurrently executed in DBMS (Database Management System) is termed as concurrency control.

It coordinates the simultaneous transactions while preserving from deadlock.

It ensures that one user work does not affect the other user’s work.

There are two mechanism involved in concurrency control. They are,

Optimistic concurrency control.

Pessimistic concurrency control.

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Answer 2

Question

Chapter 6, Problem 6.6RQ

Program Plan Intro

Transaction:

A transaction is a small set of changes which must be made to the database. The transaction done to the database may or may not affect the changes to the content of the database. The execution takes place as a single unit.

Concurrency control:

The process of ensuring the data which should be updated correctly and appropriately when multiple transactions are concurrently executed in DBMS (Database Management System) is termed as concurrency control.

It coordinates the simultaneous transactions while preserving from deadlock.

It ensures that one user work does not affect the other user’s work.

There are two mechanism involved in concurrency control. They are,

Optimistic concurrency control.

Pessimistic concurrency control.

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Answer 3

Question

Chapter 6, Problem 6.6RQ

Program Plan Intro

Transaction:

A transaction is a small set of changes which must be made to the database. The transaction done to the database may or may not affect the changes to the content of the database. The execution takes place as a single unit.

Concurrency control:

The process of ensuring the data which should be updated correctly and appropriately when multiple transactions are concurrently executed in DBMS (Database Management System) is termed as concurrency control.

It coordinates the simultaneous transactions while preserving from deadlock.

It ensures that one user work does not affect the other user’s work.

There are two mechanism involved in concurrency control. They are,

Optimistic concurrency control.

Pessimistic concurrency control.

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Answer 4

Question

Chapter 6, Problem 6.6RQ

Program Plan Intro

Transaction:

A transaction is a small set of changes which must be made to the database. The transaction done to the database may or may not affect the changes to the content of the database. The execution takes place as a single unit.

Concurrency control:

The process of ensuring the data which should be updated correctly and appropriately when multiple transactions are concurrently executed in DBMS (Database Management System) is termed as concurrency control.

It coordinates the simultaneous transactions while preserving from deadlock.

It ensures that one user work does not affect the other user’s work.

There are two mechanism involved in concurrency control. They are,

Optimistic concurrency control.

Pessimistic concurrency control.

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Answer 5

Chapter 6, Problem 6.6RQ

Program Plan Intro

Transaction:

A transaction is a small set of changes which must be made to the database. The transaction done to the database may or may not affect the changes to the content of the database. The execution takes place as a single unit.

Concurrency control:

The process of ensuring the data which should be updated correctly and appropriately when multiple transactions are concurrently executed in DBMS (Database Management System) is termed as concurrency control.

It coordinates the simultaneous transactions while preserving from deadlock.

It ensures that one user work does not affect the other user’s work.

There are two mechanism involved in concurrency control. They are,

Optimistic concurrency control.

Pessimistic concurrency control.

Answer 6

Chapter 6, Problem 6.6RQ

Program Plan Intro

Transaction:

A transaction is a small set of changes which must be made to the database. The transaction done to the database may or may not affect the changes to the content of the database. The execution takes place as a single unit.

Concurrency control:

The process of ensuring the data which should be updated correctly and appropriately when multiple transactions are concurrently executed in DBMS (Database Management System) is termed as concurrency control.

It coordinates the simultaneous transactions while preserving from deadlock.

It ensures that one user work does not affect the other user’s work.

There are two mechanism involved in concurrency control. They are,

Optimistic concurrency control.

Pessimistic concurrency control.

Answer 7

Chapter 6, Problem 6.6RQ

Program Plan Intro

Transaction:

A transaction is a small set of changes which must be made to the database. The transaction done to the database may or may not affect the changes to the content of the database. The execution takes place as a single unit.

Concurrency control:

The process of ensuring the data which should be updated correctly and appropriately when multiple transactions are concurrently executed in DBMS (Database Management System) is termed as concurrency control.

It coordinates the simultaneous transactions while preserving from deadlock.

It ensures that one user work does not affect the other user’s work.

There are two mechanism involved in concurrency control. They are,

Optimistic concurrency control.

Pessimistic concurrency control.

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Ch. 6 - Prob. 6.1RQ Ch. 6 - Explain how database administration tasks vary...Ch. 6 - Prob. 6.3RQ Ch. 6 - Prob. 6.4RQ Ch. 6 - Prob. 6.5RQ Ch. 6 - Prob. 6.6RQ Ch. 6 - Prob. 6.8RQ Ch. 6 - Prob. 6.9RQ Ch. 6 - Prob. 6.10RQ Ch. 6 - Prob. 6.11RQ

Solution Summary: The author explains that transaction is a small set of changes which must be made to the database. Concurrency control coordinates simultaneous transactions while preserving from deadlock.

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Chapter 6 Solutions