Kathi Kellenberger is a Data Platform MVP and independent database consultant. She helps customers with SQL Server performance, query tuning, high availability, ETL, and reporting. Kathi has over 15 years' experience with SQL Server starting with SQL Server 6.5. She is the author or co-author of several SQL Server books, including Beginning T-SQL from Apress. She is also an author at SimpleTalk. Kathi enjoys presenting SQL Server topics and frequently speaks at community events such as PASS Summit and SQL Saturdays. You can find out more by visiting http://auntkathisql.com.