1, Serializability has been widely accepted as the correctness criterion for concurrent access in database systems.

2, Although serializability guarantees the correctness of concurrent access, it meanwhile causes lots of loss in concurrency and brings down the system throughput.

3, Concurrency control and recovery techniques are used in conventional DBMS's to preserve the serializability and the permanence requirements of database transactions.

4, Based on analysis of transaction security, a secure transaction model is given. Moreover, a correctness criterion for secure transactions, secure conflict serializability(SCSR) is proposed.

5, The heterogeneity and autonomy make the task of ensuring global serializability in a MDBS environment difficult.

6, In order to improve throughput and reduce response time, most current applications of transaction processing run at the isolation level lower than serializability.

7, For example, any subclass of java.lang.Throwable or java.awt.Component inherits serializability from its ancestor.

8, In global validation distributed update transactions have to do check to ensure distributed serializability in all participants.