Consider a multidatabase system in which it is guaranteed that at most one global transaction is active
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Consider a multidatabase system in which it is guaranteed that at most one global transaction is active at any time, and every local site ensures local serializability.
a. Suggest ways in which the multidatabase system can ensure that there is at most one active global transaction at any time.
b. Show by example that it is possible for a nonserializable global schedule to result despite the assumptions.
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a We can have a special data item at some site on which a lock will have to be obtained before start...View the full answer
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