摘要
在演绎数据库系统中,一般将完整性约束条件和IDB规则分别表示和存储。文章基于笔者自行设计的SD-DDBS系统的IDB规则视图表示方法,给出了一个生成算法,将完整性约束条件表示成视图形式,克服了传统方法中存储开销大,演绎查询实现复杂的缺点,有效地提高了演绎查询的执行效率。
In previous deductive database systems ,generally,integrity constraints and IDB rules are denoted and memo-rized respectively.The paper,based on view-presentation method of IDB rules of this SD-DDBS system,puts forwards a generative algorithm to represent integrity constraints by view,which eliminates the shortcomings of large storage and complication in the process of deductive query in traditional methods.As a result,this method improves the efficiency of deductive query.
出处
《计算机工程与应用》
CSCD
北大核心
2003年第20期189-191,共3页
Computer Engineering and Applications
基金
山西省自然科学基金资助
