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研究了基于 Ｗｅｂ 的三层体系结构，介绍了 Ｏｐｅｎ Ｂ Ａ Ｓ Ｅ Ｗｅｂ 应用服务器的基本结构，该服务器作为三层结构的中间层，实现了运行应用逻辑所必须的运行环境和基本服务·介绍了 Ｏｐｅｎ Ｂ Ａ Ｓ Ｅ Ｗｅｂ 应用服务器中在线事务处理的实现机制，以及为了提高在线事务处理的性能而采用的若干关键技术·并在实际的应用系统中对该系统进行了验证·
This paper studies the three-tier architecture based on Web and introduces the basic structure of Open BASeWeb application server. As the middle tier of three-tier architecture, this server realizes the necessary operating environment and basic services for running application logic. The implementation mechanism of online transaction processing in Open Application Server and some key technologies used to improve the performance of online transaction processing are verified in the actual application system