A new web product data management architecture is presented. The three-tier web architecture and Simple Object Access Protocol (SOAP) are combined to build the web-based product data management (PDM) system which incl...A new web product data management architecture is presented. The three-tier web architecture and Simple Object Access Protocol (SOAP) are combined to build the web-based product data management (PDM) system which includes three tiers: the user services tier, the business services tier, and the data services tier. The client service component uses the server-side technology, and Extensible Markup Language (XML) web service which uses SOAP as the communication protocol is chosen as the business service component. To illustrate how to build a web-based PDM system using the proposed architecture, a case PDM system which included three logical tires was built. To use the security and central management features of the database, a stored procedure was recommended in the data services tier. The business object was implemented as an XML web service so that client could use standard internet protocols to communicate with the business object from any platform. In order to satisfy users using all sorts of browser, the server-side technology and Microsoft ASP.NET was used to create the dynamic user interface.展开更多
分析和研究了网格环境中数据访问和集成(data access and integration,DAI)需求,结合中间件技术的特点,提出了具有N层应用体系结构的DAI中间件实现策略,即在不同种类的数据资源和网格应用之间构建了一个中间层软件——“虚拟数据库系统...分析和研究了网格环境中数据访问和集成(data access and integration,DAI)需求,结合中间件技术的特点,提出了具有N层应用体系结构的DAI中间件实现策略,即在不同种类的数据资源和网格应用之间构建了一个中间层软件——“虚拟数据库系统”,经授权认证的合法用户可通过“虚拟数据库系统”提供的标准访问接口及统一数据格式对网格环境中各种分布的、异构的、不同种类的数据资源进行动态访问和集成。展开更多
利用 .NET Web Service构建分布式异构应用平台是当今软件设计的一个热点。文章介绍了 .NET框架中基于 Web Service的分布式异构应用平台体系结构及主要的后台工作协议 XML (e Xtensible Markup L anguage,可扩展标识语言 ) ,阐述了利用...利用 .NET Web Service构建分布式异构应用平台是当今软件设计的一个热点。文章介绍了 .NET框架中基于 Web Service的分布式异构应用平台体系结构及主要的后台工作协议 XML (e Xtensible Markup L anguage,可扩展标识语言 ) ,阐述了利用 XML作为异构数据转换的中介 ,Web Service作为分布式应用的平台来实现分布式异构数据透明转换的机制。展开更多
基金the National Key Project Foundation of China (No. 2001BA201A0605) and partially supported by the State Key Lab for Mechanical Transmission..
文摘A new web product data management architecture is presented. The three-tier web architecture and Simple Object Access Protocol (SOAP) are combined to build the web-based product data management (PDM) system which includes three tiers: the user services tier, the business services tier, and the data services tier. The client service component uses the server-side technology, and Extensible Markup Language (XML) web service which uses SOAP as the communication protocol is chosen as the business service component. To illustrate how to build a web-based PDM system using the proposed architecture, a case PDM system which included three logical tires was built. To use the security and central management features of the database, a stored procedure was recommended in the data services tier. The business object was implemented as an XML web service so that client could use standard internet protocols to communicate with the business object from any platform. In order to satisfy users using all sorts of browser, the server-side technology and Microsoft ASP.NET was used to create the dynamic user interface.
文摘分析和研究了网格环境中数据访问和集成(data access and integration,DAI)需求,结合中间件技术的特点,提出了具有N层应用体系结构的DAI中间件实现策略,即在不同种类的数据资源和网格应用之间构建了一个中间层软件——“虚拟数据库系统”,经授权认证的合法用户可通过“虚拟数据库系统”提供的标准访问接口及统一数据格式对网格环境中各种分布的、异构的、不同种类的数据资源进行动态访问和集成。
文摘利用 .NET Web Service构建分布式异构应用平台是当今软件设计的一个热点。文章介绍了 .NET框架中基于 Web Service的分布式异构应用平台体系结构及主要的后台工作协议 XML (e Xtensible Markup L anguage,可扩展标识语言 ) ,阐述了利用 XML作为异构数据转换的中介 ,Web Service作为分布式应用的平台来实现分布式异构数据透明转换的机制。
