The middleware is divided into some classes, such as database, remote procedure call (RPC), oriented message, object request agent, transaction processing management (TPM) or special PM.

中间件分数据库、远程过程调用、面向消息、对象请求代理、事务处理管程(TPM)或专用(PM)等类。

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Data access oriented transaction-processing middleware is used for distributed database transaction processing, which USES two-phase commit.

数据访问的事务处理中间件主要用于分布式的数据库访问的事务处理，采用两阶段提交技术。

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