Dejan Sarka (MCP, MCDBA, MCT) is a SQL Server MVP, Solid Quality Learning Mentor, experienced trainer and consultant in Microsoft technologies. He currently specializes in OLTP, OLAP and Data Mining projects, especially at the design stage. He is a frequent speaker at international conferences such as TechEd, SqlDevCon and PASS and is the founder of the Slovenian SQL Server and .NET Users Group. He has been a contributing author for books such as "Inside Microsoft SQL Server 2005 - T-SQL Querying" and "Inside Microsoft SQL Server 2005 - T-SQL Programming".