随着信息技术的不断推广和应用，许多企业为了管理日常事务中大量的数据，因此产生了数据仓库和数据挖掘这项技术的需要-With the continuous promotion and application of information technology, many enterprises in order to manage large amounts of data in the day-to-day affairs, resulting in the need for data warehouse and data mining of this technology