Sean McCown has been involved with SQL Server since 1995 and has worked with multi-terabyte, high-transaction DBs since before they were popular.
He is a contributing editor and the sole database expert for InfoWorld Magazine, which means he also works with DB2, Oracle, Sybase, and any other DB out there. McCown has written for SQL Server Magazine, SQL Server Standard, SSWUG, and SQLServerCentral.com. At InfoWorld, McCown concentrates on benchmarking vendor products, reviews, and industry analysis. He also runs a book review site called ITBookworm.com as well as a free video tutorial site, MidnightDBA.ITBookworm.com, where he teachs SQL Server, Windows and scripting through screencasts.