Acquisition of Domain Ontology from Relational Schemes
Hongbin Wang · Jisuanji gongcheng · 2007
It is a key issue for ontology development to acquire domain information hidden in legacy systems by reusing the existing design knowledge.This paper,taking relational database as example,analyses how to identify the information about the structure of relational schemes in legacy systems,presents 12 transformation rules,according to which terms and relations between them can be obtained from the relational schemes in reverse way.And uses the extension entity relationship(EER) diagram to further get semantic information from relational schemes for refining ontology model.