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   Book Review


data quality Data Warehousing in Action

Seán Kelly

Some years ago, following a big merger, I found myself leading a project to unify the two companies' disparate marketing databases. Fortunately I was working with an excellent IT man (commercially minded as well as technically adept) and the solution he came up with was the then cutting edge approach of building a data warehouse. As a direct marketer, the term data warehouse initially meant nothing to me, and coming to it for the first time under the pressure of a major project Sean Kelly's book was a lifesaver. Since then hybrid Marketing/IT/Information Management projects have become my trade, and I still find myself coming back to "Data Warehousing in Action" for reference at some point on pretty well every project.

The great strength of Kelly's work for me is threefold. Firstly it provides a coherent conceptual framework across the whole breadth of data warehousing activity. Secondly it succeeds in communicating technical issues clearly, in a way that people from a business rather than a techie background can understand, but without over-simplifying or talking down to the reader. Thirdly it keeps firmly in view the importance of delivering real commercial value with any data warehousing effort.

The combination of an accessible prose style and a structure that follows clear logical progression of ideas make this one of those rare books on a technical subject that you can actually read from start to finish without it being a huge struggle.

Kelly has been accused by some of the more dyed-in-the-wool techie types of being a mere populariser of other peoples ideas. Even if this were true, his skill in synthesising prevailing wisdom and presenting it in such a digestible way is a talent in itself. In any case, though many of the technical ideas may not be new, Kelly shows plenty of originality when it comes to the business of applying the technology successfully for commercial benefit.


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