数据仓库中维度模型的MDA建模与实现

imensional Model is a key composition of Data Warehouse. It is a model that is only relevant to the business logic while has nothing to do with the implementation platform. However, every implementation method of data warehouse nowadays builds dimensional models in a platform specific way. In this paper, we propose a new method of building dimensional models in a platform independent way, which uses the concept of “Platform Independent Model (PIM)” in MDA theory. First we define a modeling language using XML Schema. Then we build a platform-independent dimensional model using XML. Finally we use XSLT to build a model transformation tool, which transforms the platform-independent dimensional model automatically to a model for the target platform, and finishes the process of MDA modeling and realization.