柔性协同事务模型

提出了一个ＣＳＣＷ领域中的高级事务处理模型－柔性协同事务模型ＦＣＴＭ。首先给出协同事务的定义。并描述协同事务的状态，然后从协同事务的状态角度刻画协同事务之间、协同事务与外部环境之间的复杂依赖关系，最后用协同事务的状态依赖描述可串行化正确性准则。ＦＣＴＭ的优点在于用户能够根据不同的ＣＳＣＷ应用领域的需求，灵活地定义协同事务的状态和状态依赖。

FLEXIBLE COOPERATIVE TRANSACTION MODEL

This paper proposes an advanced transaction model for CSCW applications, Flexible Cooperative Transaction Model (denoted by FCTM). Firstly, the definition of a cooperative transaction is given and the states of cooperative transactions are specified. Secondly, the complicated dependencies among cooperative transactions and those between cooperative transactions and outside environments are specified on the perspective of states of cooperative transactions. Finally, the serializability correctness criterion is also specifies by the state dependencies of cooperative transactions. The advantage of FCTM is that users can flexible definite the states and states dependencies of cooperative transactions according to the different requirements of CSCW applications.