一种面向领域的虚拟视图语义集成方法*

针对油井工程领域异构数据源，提出了一种基于语义的虚拟视图集成方法。通过本体抽取和本体合并分别构造数据源局部本体和全局本体实现基于语义的数据访问视图，并利用全局本体、局部本体和数据源模式之间的映射关系，将基于语义的查询转换为底层数据源的访问请求，提供统一、透明的数据访问视图，以避免数据加载和更新等问题。通过油井决策支持数据集成平台，该方法取得了很好的应用效果。

Domain-oriented semantic integration method using virtual views

For heterogeneous data sources of oil engineering domain, this paper presented a semantic-based virtual view integration method. By ontology extraction and merging process, built local ontology of data sources and global ontology to achieve semantic-based data access view. Using mapping information among these ontologies and data sources, could convert semantic search statement to queries on underlying data sources. This method provided a unified and transparent data access view and could avoid the problem of frequent data loading and updating. Through applying in well decision support data-integration-platform, this method achieves a good application effect.