Database Concepts (8th Edition)
8th Edition
ISBN: 9780134601533
Author: David M. Kroenke, David J. Auer, Scott L. Vandenberg, Robert C. Yoder
Publisher: PEARSON
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Chapter 6, Problem 6.4RQ
Program Plan Intro
Transaction:
A transaction is a small set of changes which must be made to the
Concurrency control:
The process of ensuring the data which should be updated correctly and appropriately when multiple transactions are concurrently executed in DBMS then it is termed as concurrency control.
- It coordinates the simultaneous transaction 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- Optimistic concurrency control
- Pessimistic concurrency control.
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Chapter 6 Solutions
Database Concepts (8th Edition)
Ch. 6 - Prob. 6.1RQCh. 6 - Explain how database administration tasks vary...Ch. 6 - Prob. 6.3RQCh. 6 - Prob. 6.4RQCh. 6 - Prob. 6.5RQCh. 6 - Prob. 6.6RQCh. 6 - Prob. 6.8RQCh. 6 - Prob. 6.9RQCh. 6 - Prob. 6.10RQCh. 6 - Prob. 6.11RQ
Ch. 6 - Prob. 6.12RQCh. 6 - Prob. 6.13RQCh. 6 - Prob. 6.14RQCh. 6 - Prob. 6.15RQCh. 6 - Prob. 6.16RQCh. 6 - Prob. 6.17RQCh. 6 - Prob. 6.18RQCh. 6 - Explain the benefits of marking transaction...Ch. 6 - Explain the use of the SQL transaction control...Ch. 6 - Prob. 6.21RQCh. 6 - Describe statement-level consistency.Ch. 6 - Prob. 6.23RQCh. 6 - Prob. 6.24RQCh. 6 - Prob. 6.25RQCh. 6 - Prob. 6.26RQCh. 6 - Prob. 6.27RQCh. 6 - Explain what serializable isolation level is. Give...Ch. 6 - Explain the term cursor.Ch. 6 - Prob. 6.30RQCh. 6 - What is the advantage of using different types of...Ch. 6 - Explain forward-only cursors. Give an example of...Ch. 6 - Explain static cursors. Give an example of their...Ch. 6 - Prob. 6.34RQCh. 6 - Prob. 6.36RQCh. 6 - Prob. 6.37RQCh. 6 - Describe the advantages and disadvantages of...Ch. 6 - Prob. 6.40RQCh. 6 - Prob. 6.41RQCh. 6 - Prob. 6.42RQCh. 6 - Prob. 6.44RQCh. 6 - Prob. 6.45RQCh. 6 - What is the advantage of making frequent...Ch. 6 - Summarize a DBAs responsibilities for managing...Ch. 6 - Prob. 6.48RQCh. 6 - Prob. 6.49RQCh. 6 - Prob. 6.50E
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- Explain the term "deadlock" in the context of concurrency control. What strategies can be employed to prevent or resolve deadlocks?arrow_forwardIn the context of concurrency control, explain what deadlock detection and prevention techniques are, and provide examples of each.arrow_forwardWhat is the appeal of optimistic concurrency control approaches? Why might optimistic concurrency control approaches not be used even if they provide better expected performance?arrow_forward
- What is a race condition, and how does concurrency control prevent it?arrow_forwardWhat is the purpose of concurrency control What is throughput, and how is com currency control related to throughput?arrow_forwardDescribe the concept of distributed concurrency control. How does it differ from centralized concurrency control, and what challenges does it pose?arrow_forward
- Consistency is key in the design of operating systems for managing computer environments that employ many applications, multiple processors, and remote computing. the four design and management issues that concurrency generates, as well as the concept of concurrency?arrow_forwardwhy is it more difficult to find concurrency bugs compared to regular logic errors?arrow_forwardWhat are the potential issues that can arise without concurrency control mechanisms in place?arrow_forward
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