Abstract

Data warehousing has recently been applied in different applications because it can provide relevant integrated data views according to the requirement of users. Along with the popularity of object-oriented concepts, a data warehouse can be implemented effectively and efficiently with objects for representing relationships among complex data. In this paper, we consider the implementation issues of view creation and deletion in an object-oriented data warehouse with multiple underlying data sources. The same class names may exist in different data sources, but the contents in these classes may be different. Metaobjects and a class-integration procedure are thus designed to help the execution of view creation and deletion. The implementation algorithms for view creation and deletion under multiple data sources are also presented.