Keyword search over hybrid XML-relational databases

How to realize keyword search over XML databases (XML DB) or relational databases (RDB) is a todaypsilas hot topic. In this paper, we first point out that existing keyword-search methods over those databases cannot get sufficient results. Then, we propose a new keyword-search method over hybrid XML-relational databases, and demonstrate that its answers are better than those of existing techniques. We propose a new join-operator for XML data, and utilize the new operator to enable keyword search in hybrid XML-relational databases.