【作者】 朱虹； 黄欢；

【机构】 华中科技大学计算机系数据库与多媒体研究所；

【摘要】 <正>1 DM4全文检索存在的问题和分析国产数据库管理系统DM4,初步实现了全文检索功能。它直接在B+树中存放倒排索引数据,并使用通用的管理模块执行倒排索引的查询、插入与修改操作。更多还原

【Abstract】 Current full-text retrieval mechanism of DM4 DBMS mainly has two serious problems:too large space expansion rate and too much indexing time.To solve these problems,on the basis of studying Chinese language characteristic, several methods are given,focusing on rapidly building index in main memory and reducing index space by new compression method and new inverted index scheme.An improved full-text retrieval system is completed,and compared with existing systems.更多还原