数据仓库及其创建中的几个问题

Research on Data Warehouse and Some Problems in its Creation

：介绍了数据仓库的体系结构和功能，对ＯＬＴＰ和ＯＬＡＰ进行了比较，对在已有数据库基础上创建数据仓库出现的多模式间不配匹、约束不一致和属性值冲突等问题进行了分析，并结合作者的实践给出了相应解决方案或设想，最后给出了数据仓库领域进一步研究的几个问题．

In this paper,firstly data warehouse architecture and its functions are introduced; secondly,the similarities and differences between OLTP and OLAP are analyzed; thirdly,in creating data warehouse on basis of existing data,some problems such as schemas mismatching,constrains mismatching,attribute values conflicting and so on are studied, and some solutions are advanced based on author's experiments ; finally,a few further research issues in this area are addressed.