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.
此模型不仅提供保留计算机系统的有效方式，而且还提供了维护每个用户和计算机系统的历史记录的功能。
This model not only provides an effective means of reserving computer systems, but the model also provides the ability to maintain a checkout history for each user and computer system.
该模型以透明计算机系统为基础，利用透明计算技术对计算机内部的安全问题进行控制。
To deal with worsening network security problems, a trusted computer system model for network applications was developed based on the transparence computing paradigm.
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