Transcription of Concurrency Control - WBUTHELP.COM
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Concurrency Control - WBUTHELP.COM
CHAPTER 16 ConcurrencyControlThis chapter describes how to Control concurrent execution in a database, in order toensure the isolation properties of transactions. A variety of protocols are describedfor this purpose. If time is short, some of the protocols may be omitted. We recom-mend covering, at the least, two-phase locking (Sections ), through , dead-lock detection and recovery (Section , omitting Section ), the phantom phe-nomenon (Section ), and the concepts behind index Concurrency Control (theintroductory part of Section ). The most widely used techniques would therebybe is worthwhile pointing out how the graph-based locking protocols generalizesimple protocols, such as ordered acquisition of locks, which students may have stud-ied in an operating system course.
CHAPTER 1 6 Concurrency Control This chapter describes how to control concurrent execution in a database, in order to ensure the isolation properties of transactions.
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