关键词: 语义缓存 查询匹配 查询剪裁 缓存替换

Abstract:

Semantic Caching is an efficient approach to improving the performance of database applications. Semantic caches are simply the results of previously  asked queries, or selected relational information chosen by an evaluation strategy, which have been cached locally. Academic and corporate communities h ave dedicated considerable efforts to semantic caching in relational database applications. In this paper, the concepts and the principle of semantic ca ching is firstly introduced. Then, we present a taxonomy of the existing semantic caching schemes in the field of relational database. Finally, we describe some important technologies and trends.

Key words:  （semantic caching, query matching, query trimming, cache replacement）