SQL is a declarative language in the sense that only the data of interest is described in the program, not the algorithm for obtaining the data.

SQL在某种意义上来说是一种在程序中只描述感兴趣的数据的声明性语言，而不是为获得数据的算法。

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The C# language allows programmers to provide certain kinds of declarative information through attributes attached to program entities.

C# 语言允许程序设计人员通过附加在程序实体上的 attributes 来提供某些类型的说明性的信息。

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The program uses a Drools rules file to express in a declarative way the business rules defined in the preceding section.

程序使用 Drools 规则文件以声明方法表示上一节定义的业务规则。

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