基于元数据的关系数据库语义集成方法

Semantic Integration of Relational Database Based on Metadata

提出一种基于元数据的关系数据库语义集成方法,将关系数据库动态转换成具有丰富语义的虚拟资源描述框架(RDF)视图,使关系数据库中的数据成为语义网上可以被机器理解和处理的"智能数据"。介绍语义集成框架并分析关系数据库与领域本体语义映射的原理和方法,提出语义元数据描述模型。分析语义查询分解与转换的方法,描述原型系统的实现与应用情况。

This paper proposes a metadata based approach for semantic integration of relational databases, through which relational databases can be dynamically translated to virtual Resource Description Framework（RDF） views according to a domain ontology, which enables both people and machine to understand and process the ＂smart data＂. It introduces the semantic integration framework, analyzes the semantic mapping principle from relational databases to domain ontology, and gives the metadata model and approach to decompose and translate semantic query to distributed relational databases query. The implementation of a prototype is also introduced.