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Tag Archive: Data Warehouse

  • SQLBits X Video available

    June 19th, 2012 in Blog, Business Intelligence, Community, Integration Services, SQL Server

    SQLBits X Video Now available The video of my talk at SQLBits X is now available on the SQLBits website here. The talk was focused on presenting the results of my MSc Business Intelligence dissertation, comparing the performance of different methods of using SSIS to load data warehouse dimensions, specifically type 2 SCDs. The talk also covers a comparison of the performance between traditional hard disks and solid state storage systems such as…

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  • Automating T-SQL Merge to load Dimensions (SCD)

    April 6th, 2012 in Blog, Business Intelligence, Integration Services, SQL Server

    This is the 3rd post in the Frog-Blog series on the awesomeness of T-SQL Merge. Post 1: Introduction to T-SQL merge basics Post 2: Using T-SQL merge to load data warehouse dimensions In this post we’ll be looking at how we can automate the creation of the merge statement to reduce development time and improve reliability and flexibility of the ETL process. I discussed this in the 2nd half of a talk I gave at the UK technical launch of SQL…

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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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  • Data Warehousing: Kimball vs Inmon

    August 2nd, 2010 in Blog, Business Intelligence

    Anyone involved in the Business Intelligence space has had their head in the sand if they are not aware of the long running, and more often than not misunderstood, debate between the two conceptual models of data warehouse design. Bill Inmon has recently posted an article on www.b-eye-network.com discussing the matter, and to his credit, has tried to put forward a number of balanced pros and cons of each methodology. I’ll state now that…

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  • SQL User Group Session 24 June 2010

    June 9th, 2010 in Analysis Services, Blog, SQL Server

    I’m excited to be presenting another session to the South Wales SQL Server User Group. On Thursday 24th June 2010, Eversheds in Cardiff are kindly hosting the event, to run from 18:45 to 21:00. The event is free, and you’ll even get pizza thrown in – what more can you ask for? Oh yes, some BI content… My session will cover data warehouse modelling, including a number of hands on business case studies including…

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