使用嵌入式SQL，数据库编程的复杂性可以通过一些宏子语言来屏蔽。

With Embedded SQL, the intricacies of database programming are masked by a sort of macro sub-language.

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在宏内开头定义DATABASE变量告诉它要连接到哪一个数据库。

Define a database variable initially within the macro to tell it which database to connect to.

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包含文件(或者头文件)定义了在操作系统中或特定的库中使用的常量、宏以及其他结构。

Include files (or header files) define constants, macros, and other structures used in the operating system or in a particular library.

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