ER模型的逻辑表示途径

Approach to Logical Representation for ER Model

利用Answer set编程表示ER模型,从而为ER模型提供了一种新颖的逻辑表示途径。首先,完成ER模式的语法与语义定义;其次,利用Answer set编程实现ER模式的逻辑编程表示,并且这里的编程可自动实现;最后,完成以上表示的合理性证明。工作不仅克服了ER模型作为图形化工具的缺陷,使得它具有了自动推理能力,而且也为利用ER模型实现异构数据库之间的语义协作奠定了理论基础。

Through utilizing answer set programming to represent ER model,this paper proposes a novel approach of logical representation for ER model.First,the syntax and semantic of ER schema are defined.Second,answer set programming is utilized to realize logic programming representation for the ER schema,and the programming here can be automatically completed.Finally,the rationality of this representation is proved.The research result of this paper not only overcomes the defects of the ER model as a graphical tool but also establishes the theoretic base for applying ER model to realize semantic interoperability among heterogeneous databases.