OSCON Day #2: Building Data Warehouses with MySQL. I'm in John Ashenfelter's Data Warehouses talk this morning. He's an excellent presenter who really knows his material and is completely sold on MySQL. At least one person in the audience has already extolled the use of MySQL in data warehousing applications. I'm taking notes real-time, so this will be a bit disjointed but that's life. Idea for O'Reilly book: Data Warehousing in a Nutshell. The talk starts with a story about why MySQL is the most cost-effective data warehousing… [Jeremy Zawodny's blog]