摘要
语义查询是一种完全不同于传统的基于查询树的查询技术,实现语义查询优化的关键是寻找与给定查询有关的完整性约束条件;谓词逻辑中的归结原理,能对未知结果求解,即能求出问题的答案来;采用归结原理,设计一个查找Agent来完成完整性约束条件的自动查找,从而实现了数据库的语义查询优化。
The semantic query is a kind of query technology and completely different from the tradition technology based on the query tree. The key to realize the semantic query optimization is seeking for a integrity constraint condition which is related with the assigned query. The Principle Of Resolution in the predicate logic can solve to the unknown result, namely can extract the answer for a question. Using the Principle Of Resolution, we designs a search- Agent to complete the automatic search relate to integrity constraint condition, thus realize the semantic query optimization for database.
出处
《湖北职业技术学院学报》
2006年第1期93-95,共3页
Journal of Hubei Polytechnic Institute
