How quickly things become conventional wisdom. The other evening, I was having dinner with some executives, and the topic was data warehousing. One executive had just changed companies and was in the midst of selling the merits of data warehousing to his organization. The gentleman had successfully built a data warehouse in a previous organization and was charged with bringing that success with him into this new environment.

The gentleman said that he was receiving resistance to data warehousing because the senior executives knew that data warehousing was a failure. Every time he broached the subject, the other executives spoke of the failure rate of data warehousing which they thought was approximately 70 to 80 percent. It was simply conventional wisdom that the vast majority of data warehouses were failures. Everybody knew that. Or did they?

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