XML在动车段(所)异构数据源集成中的应用

Application of XML in Information Integration and Sharing of Rolling Stock Depot

动车段(所)信息化是铁路信息化的一个重要组成部分,动车段(所)每个部门的信息就是一个数据源,由于各部门建立时间不同,导致了这些数据源均为异构、分布的,从而构成了复杂庞大的数据源环境,形成了一个个“信息孤岛”。因此非常需要一种信息技术来实现动车段(所)各系统的应用集成及信息共享,并为决策提供及时可靠的服务。文中介绍了基于XML的中间件技术在动车段(所)信息集成中的应用,通过对每一个异构数据源增加一个以XML为中间格式的封装体,即在不改变数据源的前提下,用XML对数据源的相关信息进行封装,用以实现动车段(所)管理信息系统内部各子系统间,以及该系统与外部系统之间的数据交换和访问。

The rolling stock depot information system is one of the most important part of railway, information system. Every information point of rolling stock depot is a data pool. Those data pools are separated and are in different Structure because of the different time when these departments were set up. Those make the DBS environment stricter, larger and more complex,and form several separated＂ Information islands＂, So need a kind of technology that can implement the information integration and sharing of different sub- systems, and can provide creditable services for the management and decision - making. Introduce a kind of information integration technology that is based on XML and mediated schema. Though this method,adds a sealed body which use XML as its middleware - format to each isomerism data pool. That means under the premise of don＇t changing any of the data pool,use XML to seal the related information of them,in order to implements the data exchange among the interior various subsystems of the rolling Stock depot information system, and also that between the rolling stock depot information system and external system.