Dejan Sarka focuses on development of database & business intelligence applications. Besides projects, he spends about half of the time on training and mentoring. He is the founder of the Slovenian SQL Server and .NET Users Group. Dejan Sarka is the main author or coauthor of eight books about databases and SQL Server. Dejan Sarka also developed two courses for Solid Quality Learning - Data Modeling Essentials and Data Mining with SQL Server 2008.