基于VB和数据库技术的文档检索 系统设计与实现 摘要:随着计算机与网络的普及,信息资源变得越来越丰富,人们期望通过自然、便捷的方式获取所需的内容,由此产生了信息检索技术以及基于该技术的文档检索系统。用户以输入关键字的形式提出查询,通过计算机检索系统返回可能相关的文档。本文主要论述了有关文档检索系统的信息检 索技术及数据库技术,并针对文档检索的要求,对文档检索系统的功能和结构进行分析与设计,并 且依据设计,建立数据库、编写程序,ess数据库平台上的系统实现。 关键字:数据库;信息检索;系统分析;系统设计 The Design and Realization of Documents Retrieval System Based on the VB and Access Database Technology Abstract: Along puter work popularization, the information resource changes more and more richly. The people expected through the nature, the convenient way gain the content of which he needs. From this, the information retrieval technology have been born as well documents retrieval system which was based on this technology. The user proposes a inquiry by inputting keywords and obtain the documents through puter search system which may be connected. This paper mainly discusses the the information retrieval technology and the database technology which are related with documents retrieval system,. The writer aims at the request of the documents retrieval system, carries on the analysis and designs the documents retrieval system function, the structure and database, pletes with VB and Access database platform system realization. Keywords : Database;Information retrieval;System analysis;System design 目录 引言…………………………………………………………………………………………………1 1文档检索系统涉及理论与技术…………………………………………………………………1 信息检索技术概述……………………………………………………………………………1 信息检索……………………………………………………………………………………1 信息检索技术………………………………………………………………………………2 信息检索模型…………………………………………………………………………………2 信息检索模型简介…………………………………………………………………………2 布尔逻辑模型(集合模型)………………………………………………………………2 向量空间模型………………………………………………………………………………2 概率检索模型………………………………………………………………………………2 三种模型的比较……………………………………………………………………………2 文档的组织与查询……………………………………………………………………………3 文档的组织…………………………………………………………………………………3 结构化文档的组织与存储…………………………………………………………………3 文档的查询…………………………………………………………………………………3 数据库系统……………………………………………………………………………………3 数据
