ABAP程序开发基础及开发方法.pdfVIP

软件2011年第32卷 第6期 Software 国际IT传媒品牌 ABAP程序开发基础及开发方法 任泽坤 （中国石油川庆钻探地质勘探开发研究院信息中心，四川 成都 610051） 摘　要： 本文作者对 ABAP 语言的概念、功能和程序模块作了简单阐述，然后进一步对它的三种开发环境以及数据层、应用层、 表示层三层开发环境架构作了详细介绍。在此基础上对 ABAP 程序开发的基础进行了介绍，包括基本数据类型、ABAP 字典、ABAP 开发语言的语法元素、常量和变量定义、系统定义数据、字符串数据类型申明、内表申明以及工作区定义方法，还介绍了在 ABAP 开 发中经常使用的事件和主要的程序开发类型。作者最后结合自己的开发经验总结阐述了 ABAP 程序开发的六步法。 关键词： ABAP 开发、概述、开发环境、架构、开发基础 中图分类号： 　　　　　　文献标识码：　　　　　　 TP18 A DOI: 10.3969/j.issn.1003-6970.2011.06.012 ABAP Application Development Foundation and Develop Ways Ren zekun ( CCDC Geological exploration and Development Research Institute, Sichuan chengdu 610051, China) Abstract The author Introduce the detail concept and functions and the module of program of the abap language detailedly .Then 【 】 give a brief description of its three development environment and the data layer, applications layer, represents layer of the third floor of the development of environmental institutions made a detailed presentation. On the basis for abap applications for the development of infra- structure, including basic data type, abap data dictionary, abap development of language, the element of grammar, variable and constants definition, the system to define the data, the string data type declaration, the declaration in form and work areas, also introduces a definition in abap development in the event and the major types of application development. The author of the integrated development of the experi- ence demonstrates abap programs the development of the six steps. Key words ABAP Development Environment, Infrastructure, Development foundation 【 】 0　引　言 （3）屏幕参数输入的对话框是专门处理数据库读取或更改