摘要： IDMS是国际数据处理领域内享有声誉的一个网状型数据库管理系统。它允许用户在其应用程序中通过数据操纵语句(DML)的语句请求数据库服务,随后用源语言的语句对检索到的数据库记录完成期望的处理。使用的宿主语言有COBOL,PL/1,汇编和FORTRAN。 本文企图说明各类DML语句功能并以 COBOL语句为例叙述在应用程序中检索与操纵数据库记录的方法。

Abstract: IDMS is an internationally-popular database network management system which allows users to request database service by data manipulation language (DML) in application and use source to perform expected processing on database records searched. The host-language employed may be COBOL, PL/1, assembler or FORTRAN. This paper intends to describe the functions of various DML statements and the method of searching and manipulating database records in application in terms of COBOL Language.