XML is not only an intermedis between the WEB and DBMS.W3C has defined many database characters for XML,such as schema,algebra,etc,so we believe that XML will become a new data model of database,and it is necessary to...XML is not only an intermedis between the WEB and DBMS.W3C has defined many database characters for XML,such as schema,algebra,etc,so we believe that XML will become a new data model of database,and it is necessary to apply traditional DBMS techniques to build a XML DBMS.In this paper we show the necessity of building a XML DBMS and present the rachitecture of it,based on natural XML data model.Them we describe some key techniques of XML DBMS,including data storage,query optimization and visual user interface.展开更多
为了将薄壁管数控弯曲中积累的宝贵数据、经验知识进行充分共享和重用,文章采用面向对象的C#语言,基于Visual Studio．NET前台开发环境,SQL Server 2000后台数据库,研究开发了薄壁弯管数据库管理系统TUBE。TUBE中存储了大量经模拟和实...为了将薄壁管数控弯曲中积累的宝贵数据、经验知识进行充分共享和重用,文章采用面向对象的C#语言,基于Visual Studio．NET前台开发环境,SQL Server 2000后台数据库,研究开发了薄壁弯管数据库管理系统TUBE。TUBE中存储了大量经模拟和实验优化过的薄壁弯管工艺参数及成形结果;该系统中实现了对这些参数的查询、添加、修改、删除等基本功能,特别还能针对查询不到的记录,可以根据成形极限判断准则,结合已有成形参数及缺陷知识进行管子的预成形设计,再将预成形结果扩充到TUBE中,为实践提供快速、有效的指导。展开更多
文摘XML is not only an intermedis between the WEB and DBMS.W3C has defined many database characters for XML,such as schema,algebra,etc,so we believe that XML will become a new data model of database,and it is necessary to apply traditional DBMS techniques to build a XML DBMS.In this paper we show the necessity of building a XML DBMS and present the rachitecture of it,based on natural XML data model.Them we describe some key techniques of XML DBMS,including data storage,query optimization and visual user interface.
文摘为了将薄壁管数控弯曲中积累的宝贵数据、经验知识进行充分共享和重用,文章采用面向对象的C#语言,基于Visual Studio．NET前台开发环境,SQL Server 2000后台数据库,研究开发了薄壁弯管数据库管理系统TUBE。TUBE中存储了大量经模拟和实验优化过的薄壁弯管工艺参数及成形结果;该系统中实现了对这些参数的查询、添加、修改、删除等基本功能,特别还能针对查询不到的记录,可以根据成形极限判断准则,结合已有成形参数及缺陷知识进行管子的预成形设计,再将预成形结果扩充到TUBE中,为实践提供快速、有效的指导。
