我们使用一个实验室计算机系统的签出和保留应用模型的示例，首先编写从数据库访问应用程序数据所需的最简单的代码。
Using a sample checkout and reservation application model for lab computer systems, we start with the most simplistic code required to access application data from the database.
存储于文件系统的应用程序数据应当在每个集群服务器中保存一致。
Application data stored on files system should be consistently kept in each cluster server.
应用程序数据完整的副本可以在远程系统上快速地、轻松地重新联机。
A complete copy of application data can be quickly and easily brought back online on a remote system.
应用推荐