Multidatabase systems are designed to achieve schema integration and data interoperation among distributed and heterogeneous database systems. But data model heterogeneity and schema heterogeneity make this a challeng...Multidatabase systems are designed to achieve schema integration and data interoperation among distributed and heterogeneous database systems. But data model heterogeneity and schema heterogeneity make this a challenging task. A multidatabase common data model is firstly introduced based on XML, named XML-based Integration Data Model (XIDM), which is suitable for integrating different types of schemas. Then an approach of schema mappings based on XIDM in multidatabase systems has been presented. The mappings include global mappings, dealing with horizontal and vertical partitioning between global schemas and export schemas, and local mappings, processing the transformation between export schemas and local schemas. Finally, the illustration and implementation of schema mappings in a multidatabase prototype - Panorama system are also discussed. The implementation results demonstrate that the XIDM is an efficient model for managing multiple heterogeneous data sources and the approaches of schema mapping based on XIDM behave very well when integrating relational, object-oriented database systems and other file systems.展开更多
针对当前企业中不同应用系统之间存在的数据共享问题,提出了一种基于BOM(bill of material)的数据集成方法.首先给出异构数据源集成的总体架构,分析其中关键部件的作用,接着给出数据元模型的定义和多视图BOM的形成与转化,然后,介绍基于...针对当前企业中不同应用系统之间存在的数据共享问题,提出了一种基于BOM(bill of material)的数据集成方法.首先给出异构数据源集成的总体架构,分析其中关键部件的作用,接着给出数据元模型的定义和多视图BOM的形成与转化,然后,介绍基于BOM的企业异构信息系统集成在CAD,CAPP(computer-aided process planning),MES(manufacturing execution system)系统中的应用,最后以一个车间看板管理系统实例来验证方法的可行性和正确性.实例证明,该方法可以满足企业异构数据实时集成的需求.展开更多
基金Supported by the National Natural Science Foundation of China under Grant No.60573096 (国家自然科学基金)the NSFC-JST Major International (Regional) Joint Research Project under Grant No.60720106001 (NSFC-JST 重大国际(地区)合作项目)
文摘Multidatabase systems are designed to achieve schema integration and data interoperation among distributed and heterogeneous database systems. But data model heterogeneity and schema heterogeneity make this a challenging task. A multidatabase common data model is firstly introduced based on XML, named XML-based Integration Data Model (XIDM), which is suitable for integrating different types of schemas. Then an approach of schema mappings based on XIDM in multidatabase systems has been presented. The mappings include global mappings, dealing with horizontal and vertical partitioning between global schemas and export schemas, and local mappings, processing the transformation between export schemas and local schemas. Finally, the illustration and implementation of schema mappings in a multidatabase prototype - Panorama system are also discussed. The implementation results demonstrate that the XIDM is an efficient model for managing multiple heterogeneous data sources and the approaches of schema mapping based on XIDM behave very well when integrating relational, object-oriented database systems and other file systems.
文摘针对当前企业中不同应用系统之间存在的数据共享问题,提出了一种基于BOM(bill of material)的数据集成方法.首先给出异构数据源集成的总体架构,分析其中关键部件的作用,接着给出数据元模型的定义和多视图BOM的形成与转化,然后,介绍基于BOM的企业异构信息系统集成在CAD,CAPP(computer-aided process planning),MES(manufacturing execution system)系统中的应用,最后以一个车间看板管理系统实例来验证方法的可行性和正确性.实例证明,该方法可以满足企业异构数据实时集成的需求.
