Modern Database Management
13th Edition
ISBN: 9780134773650
Author: Hoffer
Publisher: PEARSON
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Chapter 7, Problem 7.4RQ
Program Plan Intro
Contrast the following terms:
Two-tier and three-tier architecture.
Fat client and thin client.
Optimistic concurrency control and pessimistic concurrency control.
Deadlock prevention and deadlock resolution.
Shared lock and exclusive lock.
Two-phase locking protocol and versioning.
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Concurrency control in distributed databases, as in other distributed systems, is difficult.
Can 2PL (two-phase locking) be utilised because there are no duplicates?
Explain?
Concurrency control is challenging in distributed databases, as it is in other distributed systems.
Because there are no duplicates, may 2PL (two-phase locking) be used?
Explain?
Concurrency control is a problem for distributed database systems, just as it is for other kinds of distributed systems. Is the use of concurrency management techniques like two-phase locking (2PL) really essential in a setup where no parts are duplicated? Explain.
Chapter 7 Solutions
Modern Database Management
Ch. 7 - Prob. 7.1RQCh. 7 - Prob. 7.2RQCh. 7 - Prob. 7.3RQCh. 7 - Prob. 7.4RQCh. 7 - Describe the advantages and disadvantages of...Ch. 7 - Describe the common components needed to create a...Ch. 7 - What are the six common steps needed to access...Ch. 7 - Prob. 7.8RQCh. 7 - Prob. 7.9RQCh. 7 - Prob. 7.10PAE
Ch. 7 - Prob. 7.11PAECh. 7 - Prob. 7.12PAECh. 7 - Prob. 7.13PAECh. 7 - Find some dynamic Web site code, such as that...Ch. 7 - Prob. 7.15PAECh. 7 - Prob. 7.16PAECh. 7 - Prob. 7.17PAECh. 7 - Consider the example code shown in Figure 7-10....Ch. 7 - Prob. 7.19PAECh. 7 - Prob. 7.20PAECh. 7 - Prob. 7.21PAECh. 7 - Prob. 7.22PAECh. 7 - Prob. 7.23PAECh. 7 - Prob. 7.24PAE
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- Explain the concept of distributed deadlock detection and resolution. What strategies can be employed to handle deadlocks in a distributed environment?arrow_forwardConcurrency control is a problem in Distributed Database Systems, just as it is in other distributed systems. Is it necessary to impose concurrency management techniques such as 2PL (Two-phase locking) in a situation where fragments are not replicated? Explain.arrow_forwardDistributed database systems, like other distributed systems, have the same concurrency management challenges as other distributed systems. Is it required to apply concurrency control solutions such as 2PL (Two-phase locking) on a system with no duplicated components? Explain.arrow_forward
- Explain how two-phase locking (2PL) and two-phase commit (2PC) protocols are used for concurrency control and distributed transactions, respectively.arrow_forwardExplain the concept of distributed concurrency control and its significance.arrow_forwardDescribe the two-phase locking protocol and its advantages in concurrency control.arrow_forward
- Distributed database concurrency management is difficult, like in other distributed systems. Can 2PL (two-phase locking) be used as there are no duplicates? Explain?arrow_forwardDistributed database systems, like other distributed systems, have a concurrency management challenge that is comparable to that of other distributed systems. Is it necessary to enforce concurrency management strategies such as 2PL (Two-phase locking) on a system given that components are not duplicated? Explain.arrow_forwardExplain the two-phase locking protocol and its significance in concurrency control.arrow_forward
- Explain how deadlock can occur in a multithreaded application and provide an example.arrow_forwardDistributed database systems have the same challenges with concurrency control as other types of distributed systems. In a configuration in which pieces are not duplicated, is it necessary to apply concurrency control methods such as two-phase locking (also known as 2PL)? Explain.arrow_forwardDiscuss the concept of distributed concurrency control in DDBMS. How do distributed locking and timestamp-based protocols ensure data consistency in a distributed system?arrow_forward
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