【摘要】 在数据仓库系统的DB-ODS-DW三层体系结构中,ODS充当了承上启下的重要角色,但传统的ODS构建技术和元数据管理方法成本较高,而且在不同厂商的数据仓库和业务分析工具之间的互操作困难.以特种设备检验机构为背景,以特种设备事故分析需求为驱动,提出了一种基于公共仓库元模型的ODS元模型构建技术,进而使用JMI对元模型予以实现.该方法可提高模型的重用性,并对各工具间提供了公共的交换机制,降低了开发成本.更多还原

【Abstract】 The ODS plays an important role in tri-level architecture DB-ODS-DW data warehouse system,but the cost of traditional construction strategy and metadata management in ODS is high,and the mutual operations between different merchant data warehouse and analysis service tools are difficult.Taking the special equipment inspection organization as the background,the special equipment accident analytical requirements as the actuation,an ODS metamodel construction technology based on common warehouse metamodel is proposed,and then the JMI is used to implement this kind of metamodel.This method enhances the reusability of the model,provides the public exchange mechanism to various tools,and also reduces the development cost.更多还原