Kalen Delaney has been working with SQL Server since 1987 when she joined the Sybase Corporation in Berkeley, California. Kalen has an independent international trainer and consultant since 1992. As a consultant, she has worked with both Microsoft Corporation and Sybase Corporation to develop courses and provide internal training for their technical support staff. Kalen has taught Microsoft Official Curriculum courses, as well as her own independently developed Advanced SQL Server Internals courses, to clients around the world. In addition, she has been writing regularly about SQL Server since 1995. Kalen is also a contributing editor and columnist for SQL Server Magazine and has been a SQL Server Most Valuable Professional since 1995.