Jonathan Lewis is well-known in the Oracle world as a freelance consultant with 22 years of experience with the Oracle RDBMS engine. His specialist skills are in the area of physical database design, and solving performance issues. Despite the differences in the software, he finds that the fundamental principles of solving performance issues don't really seem to change as you move from Oracle to SQL Server.

Jonathan is the author of 'Cost Based Oracle – Fundamentals' published by Apress, and 'Practical Oracle 8i – Designing Efficient Databases' published by Addison-Wesley, and has contributed to three other books about Oracle. His blog is at http://jonathanlewis.wordpress.com, where his first note on SQL Server 2008 appears at: http://jonathanlewis.wordpress.com/2010/02/04/sql-server/