Dejan Sarka, SQL Server MVP, focuses on development of database & business intelligence applications. Besides projects, he spends about half of his time on training and mentoring. He is a frequent speaker at some of the most important international conferences such as TechEd, SqlDevCon and PASS. He is also indispensable during regional MS events, such as the NT Conference, the largest MS conference in Central and Eastern Europe. He is the founder of the Slovenian SQL Server and .NET Users Group. As main author or coauthor, Dejan has written eleven books about SQL Server so far, and is involved in couple more for SQL Server 2012. Dejan Sarka also developed three courses for SolidQ: Data Modeling Essentials, Data Quality & Master Data Management and Data Mining.