化学品中文文献题录检索系统的建立

化学品中文文献题录数据库包括从1949～1991年公开发表在全国至药卫生、环保、生物、化工、农业及大专院校学报等400多种刊物上的化学品文献题目4万余条,涉及2000余种物质.总信息量为140多万字.涉及化学品研究的各个领域.该系统采用C吾言,共编写1500多条语句,25个函数模块.数据库格式采用文本数据库存储,并建立关键饲倒排文件数据库.检索方式采用逻辑“或”,“与”,“非”任意组合,全部采用汉字系统下彩色全屏幕窗口式菜单操作,具有独立的文字编辑处理功能以及输出打印功能,数据库磁盘空间利用率达到90%以上.

Establishment of the search system of Chinese literature titles on chemicals

The database of Chinese literature titles on chemicals covered more than forty thousands literature titles. which are collected from more than 400 kinds of journals on environmental health, environmental protcction. biology, chemical industry and agriculture etc. from 1949 to 1991. It includes the data of more than 2000 kinds of chemicals and many research fields on chemicals. The information content is 2. 8M. 1500 statements and 25 function modules are compiled with C language in the system. The data are stored with text file. The inverted file database on keywords is established. The search method used is logic combination with "or". "and" and "no". The system is operated on colour screen with the window menu in Chinese. It has the func/ tion of literal editting and processing, and it has the function of outting, putting and printting too. The utiliz-ability rate of disk is above 90%.