Concurrent transactions: Transaction is a unit of program execution which accesses as well as update data items in a database system. Every transaction should have four properties: atomicity, isolation, consistency and durability. Concurrent transaction means any number of users can use the same database at the same time. It improves the throughput of transactions as well as waiting time, but this method does not assure preservation of database consistency. So, concurrency control scheme is used.

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Chapter 9, Problem 48CRP

Program Plan Intro

Concurrent transactions:

Transaction is a unit of program execution which accesses as well as update data items in a database system. Every transaction should have four properties: atomicity, isolation, consistency and durability. Concurrent transaction means any number of users can use the same database at the same time. It improves the throughput of transactions as well as waiting time, but this method does not assure preservation of database consistency. So, concurrency control scheme is used.

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Question

Chapter 9, Problem 48CRP

Program Plan Intro

Concurrent transactions:

Transaction is a unit of program execution which accesses as well as update data items in a database system. Every transaction should have four properties: atomicity, isolation, consistency and durability. Concurrent transaction means any number of users can use the same database at the same time. It improves the throughput of transactions as well as waiting time, but this method does not assure preservation of database consistency. So, concurrency control scheme is used.

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Question

Chapter 9, Problem 48CRP

Program Plan Intro

Concurrent transactions:

Transaction is a unit of program execution which accesses as well as update data items in a database system. Every transaction should have four properties: atomicity, isolation, consistency and durability. Concurrent transaction means any number of users can use the same database at the same time. It improves the throughput of transactions as well as waiting time, but this method does not assure preservation of database consistency. So, concurrency control scheme is used.

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Answer 4

Question

Chapter 9, Problem 48CRP

Program Plan Intro

Concurrent transactions:

Transaction is a unit of program execution which accesses as well as update data items in a database system. Every transaction should have four properties: atomicity, isolation, consistency and durability. Concurrent transaction means any number of users can use the same database at the same time. It improves the throughput of transactions as well as waiting time, but this method does not assure preservation of database consistency. So, concurrency control scheme is used.

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Answer 5

Chapter 9, Problem 48CRP

Program Plan Intro

Concurrent transactions:

Transaction is a unit of program execution which accesses as well as update data items in a database system. Every transaction should have four properties: atomicity, isolation, consistency and durability. Concurrent transaction means any number of users can use the same database at the same time. It improves the throughput of transactions as well as waiting time, but this method does not assure preservation of database consistency. So, concurrency control scheme is used.

Answer 6

Chapter 9, Problem 48CRP

Program Plan Intro

Concurrent transactions:

Transaction is a unit of program execution which accesses as well as update data items in a database system. Every transaction should have four properties: atomicity, isolation, consistency and durability. Concurrent transaction means any number of users can use the same database at the same time. It improves the throughput of transactions as well as waiting time, but this method does not assure preservation of database consistency. So, concurrency control scheme is used.

Answer 7

Chapter 9, Problem 48CRP

Program Plan Intro

Concurrent transactions:

Transaction is a unit of program execution which accesses as well as update data items in a database system. Every transaction should have four properties: atomicity, isolation, consistency and durability. Concurrent transaction means any number of users can use the same database at the same time. It improves the throughput of transactions as well as waiting time, but this method does not assure preservation of database consistency. So, concurrency control scheme is used.

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Ch. 9.1 - Identify two departments in a manufacturing plant...Ch. 9.1 - Prob. 2QE Ch. 9.1 - Summarize the roles of the application software...Ch. 9.2 - Prob. 1QE Ch. 9.2 - Prob. 2QE Ch. 9.2 - Prob. 4QE Ch. 9.2 - Prob. 5QE Ch. 9.2 - Prob. 6QE Ch. 9.3 - Prob. 1QE Ch. 9.3 - What is a persistent object?

Solution Summary: The author explains that concurrent transactions have four properties: atomicity, isolation, consistency, and durability. It improves throughput, but does not assure database consistency.

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Chapter 9 Solutions