The integration of the heterogeneous databases,which can exploit the information resources effectively and realize the data-sharing,is one of the vexed points in current data processing field.In this paper,an XML-base...The integration of the heterogeneous databases,which can exploit the information resources effectively and realize the data-sharing,is one of the vexed points in current data processing field.In this paper,an XML-based system for integration and query of heterogeneous relational data sources is introduced and designed.We discuss an approach of heterogeneous data sources integration.The system adopts XML Schema standard of W3C as global description of heterogeneous data sources.By means of pick-up of relational mode,conversion of relational mode to XML Schema and adding semantic content constraints,we have implemented merging of heterogeneous databases resources in virtue of the powerful data description ability of XML Schema.展开更多
文摘The integration of the heterogeneous databases,which can exploit the information resources effectively and realize the data-sharing,is one of the vexed points in current data processing field.In this paper,an XML-based system for integration and query of heterogeneous relational data sources is introduced and designed.We discuss an approach of heterogeneous data sources integration.The system adopts XML Schema standard of W3C as global description of heterogeneous data sources.By means of pick-up of relational mode,conversion of relational mode to XML Schema and adding semantic content constraints,we have implemented merging of heterogeneous databases resources in virtue of the powerful data description ability of XML Schema.
