John Welch is BI Architect with Varigence. Varigence builds tools and frameworks that enable the creation and management of end-to-end business intelligence solutions with unprecedented ease and speed. John has been working with business intelligence and data warehousing technologies for 9 years, with a focus on Microsoft products in heterogeneous environments. He is a Microsoft Most Valued Professional (MVP) and an experienced speaker, having given presentations at Professional Association for SQL Server (PASS) conferences, the Microsoft Business Intelligence conference, Software Development West (SD West), Software Management Conference (ASM/SM), and others. He has also contributed to three recent books on SQL Server 2008, “Microsoft SQL Server 2008 Management and Administration”, "Smart Business Intelligence Solutions with Microsoft SQL Server 2008", and “SQL Server MVP Deep Dives”.