Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Concurrency management is a problem for distributed
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- 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?arrow_forwardHow do "spinlocks" differ from traditional locking mechanisms in concurrency control?arrow_forwardDistributed database management systems face the same concurrency control challenges as other categories of distributed systems. Is it necessary to employ concurrency control mechanisms such as two-phase locking (also known as 2PL) in a configuration with no duplicates? Explain.arrow_forward
- This example might be improved by starting with a database maintained by an airline that employs "snapshot isolation." What if, rather of increasing the airline's overall performance, a non-serializable execution did so?arrow_forwardWhat strategies might concurrency mechanisms use to avoid a deadlock? Please, no handwritten responses, no single-worded, single-phrased, or single-sentence responses. Please assist me in comprehending it.arrow_forwardTake the case of a snapshot-isolated database used by an airline. I was wondering if you could provide me an example of a non-serializable execution that the airline would be prepared to tolerate in exchange for improved performance.arrow_forward
- Take, for example, a database for an airline, which makes use of snapshot isolation in the database system. For example, a nonserializable execution may be accepted by the airline in order to get better results in the long run.arrow_forwardWhen it comes to concurrency management, is tight timestamp ordering used? Justify your response by using appropriate schedules and comparing it to different timestamp ordering protocols.arrow_forwardHow do databases manage the "phantom read" problem in concurrency control?arrow_forward
- The same concurrency management issues apply to distributed database systems as they do to other distributed systems. Is it necessary to use 2PL (Two-phase locking) concurrency control techniques for a system that does not have any duplicated components? Explain.arrow_forwardWhat are the benefits of "transaction pooling" in high-concurrency systems?arrow_forwardConcurrency management is a challenge in distributed database systems, as it is in any distributed system. Is 2PL (two-phase locking) necessary if there are no duplicated fragments? Explain.arrow_forward
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