Query of the Heterogeneous Integrated Data
Xiaodong Zhu · Journal of Zhejiang Wanli University · 2004
Query for the integration of heterogeneous data is an inevitable problem in the process of information system development. The problem can be addressed by two approaches. One is based on the data warehouse and the structural characteristic of the data center. The other is based on virtual integration of heterogeneous data sources. Based on the second approach, the paper discusses how to modify OCL in order to create an unified query language, which can be transfered into the code of Xquery.