These services are middleware for integration between client and server components.
这些服务是用于客户端和服务器组件集成的中间件。
Communication between the client and server is always the emphases of research of middleware.
客户端和服务器间的连接和通信一直是中间件研究的重点。
In this technology era, there are Numbers of database access middleware which become a connection between applications on client side and database server.
在这个技术时代，有很多数据库存取中间件成为客户端应用程序和数据库服务器之间的连接。
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