Application of Ontology-Based Information Integration on BI System

In this paper, due to the demand of heterogeneous data sources integration issue in business intelligent system, an ontology-based information integration middleware is designed, in which uses semantic description as a tool to map heterogeneous data sources to data warehouse, and applies Web ontology language (OWL) to represent the ontologies and the mapping rules. This middleware is designed and realized to resolve the problem of schematic heterogeneity and maintainability in traditional extract, transformation and load (ETL) process. Key technologies applied in the system are discussed.