They say that data integration accounts for 80% of the effort of a data warehousing (or a variety of other enterprise application's) effort. But who are "they"? I know that the figure is often presented as the typical resource and time investment for data integration activities, but have not tracked down a source for it. I seem to recall seeing it in some data warehousing book, but do not remember which one.
Nonetheless, there is no reason for data integration to consume that amount of effort if the right steps are taken ahead of time to reduce the comfusion and complexity of ambiguous semantics and structure. I will discuss these issues at a webinar this Thursday, August 12 - hope you can make it!
Posted August 10, 2010 6:05 AM
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