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.
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.
如果在首次包含本库头文件之前用户未显式定义该宏，则缺省为20。
Defaults to 20 if not explicitly defined by the user before inclusion of the first library header.
它还提供了一些功能，可用来管理各种可选配置、实现可重用库的细节以及让用户以自定义宏将过程参数化。
It also provides features to manage alternate configurations, implement reusable libraries of specifications, and parameterize processes with user-defined macros.
在历史上，这些都是由构建程序控制表(PCT)的宏定义的，但是，如今在资源定义联机(rdo)数据库的TRANSACTION定义中进行定义。
Historically, these were defined by macros which built a Program Control Table (PCT), but are nowadays defined in TRANSACTION definitions within the resource definition online (RDO) database.
在历史上，这些都是由构建程序控制表(PCT)的宏定义的，但是，如今在资源定义联机(rdo)数据库的TRANSACTION定义中进行定义。
Historically, these were defined by macros which built a Program Control Table (PCT), but are nowadays defined in TRANSACTION definitions within the resource definition online (RDO) database.
应用推荐