【摘要】 分布式系统中数据格式的多样化以及数据分布的分散性,导致了数据操作的复杂化,同时也对分布式系统的效率提出了更高的要求。OLE DB提供应用以统一接口标准,对各种数据源进行无差别的访问。OLE DB基于COM规范,在一系列可扩展维护的COM接口中封装了各种数据源操作,最大程度抽象出各种数据源的共有操作,屏蔽了其个体差异。文中较详细地分析了OLE DB的体系结构及其通用数据访问的主要特点,提出了一种OLE DB的实现方式。更多还原

【Abstract】 The variety of data format and separated data storage that in distributed system lead a more complicated operating on data in that system.In the same time,a high level efficiency has become necessary still.OLE DB provides unified interfaces to access most data source identically.As based on COM technique, to operate date sources OLE DB provides a series of COM interfaces which hide the differences of data sources and make to access different type of data sources as in a same way.In this paragraph,an analysis on the structure of OLE DB shows details of characteristics of the UDA and gives a way to achieve OLE DB.更多还原