机构地区: 同济大学经济与管理学院
出 处: 《计算机科学》 2007年第2期166-170,共5页
摘 要: 从遗留信息系统中获取领域信息是创建本体的重要环节。本文以最为常用的关系数据库为对象,分析了如何从遗留系统中识别关系模式的结构信息,然后提出了12条术语转换规则,并根据转换规则从关系模式的结构信息中逆向提取出领域术语及相互关系,最后利用扩展的关系实体图进一步获取关系模式的语义信息,并以此来精炼领域本体。 It is a key issue for ontology development to acquire domain information hidden in legacy systems. This paper, taking relational database as example, analyzes how to identify the information about the structure of relational schemes in legacy systems. Then, presents 12 transformation rules, according to which terms and relations between them can be obtained from the relational schemes in reverse way. Finally, uses the Extension Entity-Relationshlp (EER)diagram to further get semantic information from relational schemes for refining ontology model.
领 域: [自动化与计算机技术] [自动化与计算机技术]