【摘要】 针对企业存在的"信息孤岛"现象,介绍了几种常用的数据集成方法,但语义异构的问题仍存在于各种数据集成方案之中。基于本体能够精确描述概念体系和领域知识,提出了一种基于本体的异构数据集成系统模型,描述了模型的各组成部分,重点分析了模型的关键技术即本体库的建立与查询的处理过程。更多还原

【Abstract】 According to "information isolated-island" phenomena in enterprises,this paper introduces several common data integration methods,but the semantic heterogeneous problems still exist in the schemas of the data integration.Based on the fact that ontology can describe precrisely conceptual system and domain knowledge,this paper proposes an ontology-based heterogeneous data integration model,and introduces all components of the model,and emphatically analyzes key technologies——the creation of the ontology database and processing of the query.更多还原