IC卡系统数据一致性研究

THE DATA CONSISTENCY OF IC CARD SYSTEM

IC卡系统的数据一致性指IC卡记录的信息必须与IC卡系统中计算机记录的信息严格一致 ,其关键问题在于IC卡交易信息必须同时写入IC卡和交易计算机。文中在对分布事务一致性理论进行深入研究的基础上 ,结合IC卡系统特点 ,提出了“非对称双节点分布事务”的概念和“非对称双节点两阶段提交”算法 ,从理论上解决IC卡系统数据一致性问题 。

The data consistency of IC card system is that the information stored in IC card must be rigorous consistent with the information stored in computers of IC card system, the pivotal problem is that the exchange information must be recorded in IC card and the exchange computer consistently. This paper proposes a concept named 'nonsymmetrical binode distributed transaction' and a arithmetic named 'nonsymmetrical binode 2PC', which are based on the research of the theory of distributed transaction consistency and research of the characteristic of IC card system. The arithmetic given in this paper can resolve the problem of data consistency of IC card system on theory aspect. In addition, this paper discusses the material technic of above theory.