The OLE DB for the Multiple Data Source
Wang Li · Computer Technology and Development · 2006
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.