Dejan Sarka, MCT and Data Platform MVP, is an independent trainer and consultant with more than 30 years of experience who focuses on development of database and business intelligence (BI) applications. He works on projects, and spends about half of his 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 co-author of 19 books about databases and SQL Server, and has developed many courses and seminars for Microsoft, Radacad, SolidQ, and Pluralsight.