Our data warehouse is so big, it only comes into work when it feels like it.
At my job, we have realized that we need a data warehouse. It was actually quite easy to make this decision - everyone else has one so, therefore, we should obviously have one as well. In order to be better than everyone else, we have, however, not stopped at a data warehouse. We decided to go for the whole kit; an operational data store (ODS) that feeds an enterprise data warehouse that feeds a load of domain specific data marts. Now that we have a killer infrastructure, we just have to figure what we want out of all the stuff.
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