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Distributed Database Systems
EXERCISES
Multiple Choice Questions
(i) Changes made in a database are called
a. Transaction
b. Commit
c. Replication
d. Fragmentation.
(ii) “All-or-nothing” property of a transaction
is called
a. Consistency
b. Durability
c. Isolation
d. Atomicity.
(iii) Which of the following statements is
correct?
a. Transaction recovery is the activity of
ensuring transaction atomicity in the
case of transaction aborts owing to
hardware failure
b. Crash recovery is the activity of ensuring
transaction atomicity in the case of transac-
tion aborts owing to bad input or deadlock
c. Crash recovery is the activity of ensuring ...