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This Concept Map, created with IHMC CmapTools, has information related to: ch13 tran lock, Transactions must be scheduled so that their effect on shared objects is serially equivalent -to achieve serial equivalence- 1 all access by a transaction to a particular object must be serialized with respect to another transactions acess 2 all pairs of conflicting operations of two transactions should be executed in the same order ???? a transaction is not allowed any new locks after it has released a lock, two phase locking has a growing and shrinking phase ???? strict two phase locking, Transactions must be scheduled so that their effect on shared objects is serially equivalent -to achieve serial equivalence- 1 all access by a transaction to a particular object must be serialized with respect to another transactions acess 2 all pairs of conflicting operations of two transactions should be executed in the same order ???? A server can achieve serial equivalence by serialising access to object by the use of locks, Locks ???? two phase locking has a growing and shrinking phase, Locks ???? Transactions must be scheduled so that their effect on shared objects is serially equivalent -to achieve serial equivalence- 1 all access by a transaction to a particular object must be serialized with respect to another transactions acess 2 all pairs of conflicting operations of two transactions should be executed in the same order