CAJ | 학술논문

在多数据库环境中存在着全局事务和局部事务，它们必须相互协作，从而为应用程序提供一致性的数据.为了维护多数据库系统（MDBS）的一致性，提出一种事务管理机制.该机制基于扩展事务的原理，对全局子事务和局部事务进行扩展，并为各个局部数据库引进一些控制表.局部数据库管理系统（LDBMS）在局部数据库和控制表之上执行扩展事务，这些扩展事务负责维护全局可串行性及事务的恢复.由于它不依赖于LDBMS的各种特征，因此该方法易于实现，是实用的.
재다수거고배경중존재착전국사무화국부사무，타문필수상호협작，종이위응용정서제공일치성적수거.위료유호다수거고계통（MDBS）적일치성，제출일충사무관리궤제.해궤제기우확전사무적원리，대전국자사무화국부사무진행확전，병위각개국부수거고인진일사공제표.국부수거고관리계통（LDBMS）재국부수거고화공제표지상집행확전사무，저사확전사무부책유호전국가천행성급사무적회복.유우타불의뢰우LDBMS적각충특정，인차해방법역우실현，시실용적.
In a MDBS environment, there are two kinds of transactions: global transactions and local transactions. They must cooperate to provide all applications with consistent data. In order to maintain consistency in multidatabase systems, a transaction management mechanism is proposed, which is based on the principle of extended transactions. The presented method extends global transactions and local transactions. And each component database is extended by some control tables. The extended transactions are executed by the LDBMS on the local database and the specially generated control tables. These extended transactions are responsible for the global serializability and recovery of transactions. The solution is easy to implement because it is independent of all characters of LDBMS.