Which statement is not correct? a. Primary site 2PL comes down to applying the centralized Two- Phase
Question:
Which statement is not correct?
a. Primary site 2PL comes down to applying the centralized Two-
Phase Locking Protocol in a distributed environment.
b. A disadvantage of primary site 2PL is that the central lock manager may become a bottleneck.
c. With distributed 2PL, every site has its own lock manager, which is responsible for managing all locking data pertaining to the fragments stored on that site.
d. Even if the database contains replicated data, applying the basic 2PL protocol still suffices to guarantee serializability.
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Statement c With distributed 2PL every site has its own lock manager ...View the full answer
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Related Book For
Principles Of Database Management The Practical Guide To Storing Managing And Analyzing Big And Small Data
ISBN: 9781107186125
1st Edition
Authors: Wilfried Lemahieu, Seppe Vanden Broucke, Bart Baesens
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