They provide a way to wrap database access and business logic, so they can be distributed on multiple servers.

它们提供了一种封装数据库访问和业务逻辑的方法，这样就可以在多台服务器上实现分发了。

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In a fundamental distributed environment, access to a resource (whether a file, printer, database, etc.) is managed by resource managers (application servers).

在基本的分布式环境中，对于资源(文件、打印机、数据库，等等)的访问是通过资源管理器(应用程序服务器)进行管理的。

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A decentralized system-known in the database world as a distributed system can be highly responsive to differences in data gathering, storage, and access.

分散式系统在数据库领域中称为分布式系统，这种系统能处理不同的数据采集、存储和访问方一式。

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