XML_based integration data model and in multidatabase systems
出版社：
- 出版社：singhua Tongfang Optical Disc Co., Ltd.
- 页数：：437-444
- 出版年：2005
摘要内容：
Multidatabase systems are designed to achieve schema integration and data interoperation among dist ributed and heterogeneous database systems. But data model heterogeneity and schema heterogeneity make this a challengingtask. A multidatabase common data model is firstly int roduced based on XML , named XML2based Integration DataModel (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 globalmappings , dealing with horizontal and vertical partitioning between global schemas and export schemas , and local mappings , processing the t ransformation between export schemas and local schemas. Finally , the illust ration and implementation of schema mappings in amultidatabase prototype 2 Panorama system are also discussed. The implementation results demonst rate 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 , object2 oriented database systems and other file systems.
关键词：
- multidatabase systems , common data model , schema ma pping , extensible markup language (XML)
