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  • Anyone interested in BI from Portugal or Spain should not miss the Microsoft BI Conference 2011 in Lisbon : one full day ( March, 25, 2011 ) with three tracks on Business Intelligence: Decision Makers BI pros Intro to BI. I am going to present two sessions  Read more

  • Does PowerPivot handle Parent/Child hierarchies? The common answer is “no”, since it does not handle them natively. During last PowerPivot course in London, I have been asked the same question once more and had an interesting discussion about this severe  Read more

  • Slowly changing dimensions are very common in the data warehouses and, basically, they store many versions of the same entity whenever a change happens in the columns for which history needs to be maintained. For example, the AdventureWorks data warehouse  Read more

  • In a previous post , I have used a stock exchange scenario to speak about how to compute moving averages in a complex scenario. Playing with the same scenario, I felt the need to compare two stocks on the same chart, choosing the stock names with a slicer.  Read more

  • In this post I want to analyze a data model that perform some basic computations over stocks and uses one of the most commonly needed formula there (and in many other business scenarios): a moving average over a specified period in time. Moving averages  Read more

  • I spend most of my time developing complex BI solutions and, doing that, I always talk with DBA, developers, CEO, data analysts and the many kind of people that work around a BI solution. Nevertheless, in these last months, publishing posts about PowerPivot  Read more

  • A very frequent question, when performing business analysis, is to count the number of working days in a certain period of time. Creating a data model with PowerPivot that gracefully handles working days is pretty easy, nevertheless it is worth a post.  Read more

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