二维表格汉字查询语言——一种面向管理人员的关系数据库语言

TWO DIMENSIONAL TABLE QUERY LANGUAGE IN CHINESE——AN ADMINISTRATORS ORIENTED RELATIONAL DATABASE LANGUAGE

采用怎样的人机接口作为管理人员与计算机之间的交互手段。这是在设计一个计算机辅助管理系统的时候首先必须考虑的问题。由于一般管理人员多是非计算机专业的用户,因此,要求这个人机接口符合他们的工作习惯和心理。显然,表格提供了管理人员和数据之间最自然和最有效的界面。本文介绍一种面向管理人员的关系数据库语言——二维表格汉字查询语言,它包括数据库定义、数据库查询以及数据插入、删除、更新、打印、分类、统计等功能。是一种功能较强但语法简单的高度非过程化语言,它具有某些第四代语言的特征。

What man-machine interface to be used as an interaction method betweenadministrators and computers is an important issue of designing computer-aidedmanagement system.Administrators are not professional computer users,therefordthe interface must accord with their customs and psychology.Tables are natural andefficient interfaces between administrators and data.This paper describes an administrators oriented relational database language inChinese.It provides a Database Definition Language(DDL)and Database ManipulationLanguage(DML)and some other functions such as Print,Sort and Statisties.It is apowerful and simple non-procedural language with some characteristics of the 4thgeneration language.