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Data visualization : Network analysis with Graphviz and NodeXL
IntroductionWe are witnessing the growing importance of data visualization in Business Intelligence and -Business Analytics. Data visualization is one of the important aspects of Analytics process....
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PowerPivot : Showing the latest data
IntroductionShow me the latest information that you have! This is a common requirement when you are building reports for users. Users do not always want to click on the selections or slicers (in case...
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Download SQL Server 2016 Developer Edition
Introduction Yes, SQL Server 2016 is there finally and the Developer Edition is for free. Finally it's there. I have read quite a lot about it, but waited to study with until the RTM was available. I'm...
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Downloading Microsoft R Server 2016
IntroductionIt seems that Microsoft R Server is a separate installation of R Server. It is also present a the Visual studio Dev essentials. But is is also a separate installation option during the...
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Installation of SQL Server Developer Edition 2016
IntroductionI've downloaded the SQL Server Developer Edition 2016 ISO from Visual Studio Essentials site and installed it on a VirtualBox environment. This is my first experience with SQL Server 2016....
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Installation of SQL Server Management Studio 2016
IntroductionIt seems that Microsoft decided to install the SQL Server Management Studio as a separate installation. And, you need to have internet connection to download the software. It is about 825...
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Installation of SQL Server Data Tools
IntroductionNow the last part of the installation of SQL Server 2016 and that is SQL Server Data Tools. In the past you had to install SSDT BI and SSDT DB as two separate installations. It was...
View ArticleDAX : Some DAX QTD, YTD and LY calculations with a Period Dimension
IntroductionSometimes, there are workbooks where you don't have a granularity on a daily basis available but on a higher level. For, instance on a weekly or a monthly level. The problem is that the...
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Installation of Team foundation Server 2015
IntroductionAs your projects get bigger and bigger and more people are involved, a normal Visual Studio project is not enough anymore. It is not build for multiple user support. Now in order to...
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What is Github?
IntroductionGitHub is a code hosting platform for version control and for collaboration. You can work together on projects from any place you want. Now once in a while, I'm using Github for working on...
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Error : This PivotTable report is invalid
IntroductionI was struggling with a problem with a PivotTable in Excel for hours. Although I can't exactly pinpoint the source of the problem, I would like to share this problem and a possible solution...
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PowerPivot : Discovering prediction of sales with simulation
IntroductionI was wondering whether I could add predictive analytics into my PowerPivot Workbooks. If I could predict the sales based on the sales in the former month or based on the same period last...
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First impression of SQL Server R Services (part I)
IntroductionI wanted to know more about R Services and I decided to walkhrough the tutorial provided by Microsoft. There are a couple of lessons you can follow to understand R Services. So this will...
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DAX : Ranking the Stars with RankX
IntroductionI have to work on a ranking problem and therefore I decided to study the RANKX() function in DAX a bit further. The idea is that the RANKX function determines the rank of a certain item in...
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New, stopped, active and returned products
IntroductionI want to develop a report for the evolution of products. The question is whether a product that is sold is a new product in a given period (innovative product), a product that is not sold...
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WorldWideImporters Data warehouse Datamodels
IntroductionJust a small blogpost about the data models of World wide Importers data warehouse (WorldWideImportersDW). I just wanted to get an overview of the data warehouse models of World Wide...
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SQL : ColumnStore Index (part I)
IntroductionColumnStore indexes are a powerful addition to SQL Server and it started with SQL Server 2012 and it continued to evolve to a better ColumnStore Index today. I want to learn more about it...
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SQL : ColumnStore Index (part II) : Indexing
IntroductionIn my first blogpost about the ColumnStore Index, I've written about creating and dropping a columnstore. Please took a look at my first blogpost: SQL : ColumnStore Index (part I). In this...
View ArticleSQL : ColumnStore (part III) : enforce uniqueness (SQL Server 2014)
IntroductionColumnstores in SQL Server 2014 can not enforce primary keys and you can't create an unique non clustered index in contrast with SQL server 2016, where you are able to create an unique non...
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Slowing Changing Dimensions (SCD) explained
IntroductionChanges in data in a data warehouse (Slowing Changing Dimension principle) is a key concept of a data warehouse. If you track the changes in a data warehouse it is possible to go back in...
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