When the client makes a remote procedure call, it contacts the name service database to find information about the server system.

客户机发出远程过程调用，此时它会联系名称服务数据库，以寻找服务器系统的相关信息。

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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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