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Tag Archive: SCD

  • MSc Dissertation – Performance of Loading SCDs in SSIS

    July 20th, 2012 in Blog, Business Intelligence, Integration Services, SQL Server

    Well after 3.5 years, I’ve finally completed my MSc Business Intelligence – hoorah! And to reward the time, effort and increased grey hair, they saw fit to give me a merit as well. During the last year I’ve been writing a thesis investigating the performance characteristics of loading data into data warehouse dimensions. Specifically loading Type 2 SCDs using SSIS. For those who have followed the previous posts and my…

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  • Using T-SQL Merge to load Data Warehouse dimensions

    January 16th, 2012 in Blog, Business Intelligence, SQL Server

    In my last blog post I showed the basic concepts of using the T-SQL Merge statement, available in SQL Server 2008 onwards. In this post we’ll take it a step further and show how we can use it for loading data warehouse dimensions, and managing the SCD (slowly changing dimension) process. Before we start, let’s have a quick catch up on what an SCD is… What is a Slowly Changing Dimension (SCD)? If you want a full explanation of…

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