例如，我们必须设计数据模型之间的转换系统。
For example, translation systems between data models must be designed.
转换系统包括三个部分：模式转换、数据转换、应用程序转换。
The system consists of three parts: schema conversion, data conversion, and application program conversion.
在高程转换系统中首先对输入的数据进行粗差探测，剔除可能存在粗差的观测数据，从而提高拟合结果的可靠性。
In the elevation conversion system, at first detected the gross errors of inputting data and then removed it, enhanced the reliability of the fitting results.
语言是一种描述转换系统相关数据特征的形式化语言，然而不适合建立动态行为的模型。
The Z language is a formal language for specifying data-related characteristics of transformational systems. however, it is not designed to model behaviour.
本文介绍了数据库转换的概念和方法，并介绍了一个数据库转换系统，该系统将数据库及应用程序从层次模型的IMS系统转换到关系模型的ORACLE系统。
In this paper, we introduce the concept and several methods of database conversion. Then we present a database conversion system, which converts information system from IMS to ORACLE.
本文介绍了数据库转换的概念和方法，并介绍了一个数据库转换系统，该系统将数据库及应用程序从层次模型的IMS系统转换到关系模型的ORACLE系统。
In this paper, we introduce the concept and several methods of database conversion. Then we present a database conversion system, which converts information system from IMS to ORACLE.
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