I would like to share with you with interesting article about WAL-MART warehouse.
Its only fitting that the largest retailer should have the worlds largest database, but at more than one-half a petabyte, thats a lot of information, even for Wal-Mart.This massive data warehouse is not solely a customer CRM system, but also serves as the base for Wal-Marts Retail Link decision-support system between Wal-Mart and its suppliers. Retail Link allows suppliers to access large amounts of online, real-time, item-level data to help those suppliers improve operations. Unlike a typical database that can get slower as it expands—and requires more time to complete backups and virus scans, for example—Berman argues that Teradatas approach sidesteps those growth issues. "Our system is nearly 100 percent linear-scalable. Its designed to scale without the management restrictions of other databases." How so? "Every time we add a node, we add an equal amount of bandwidth," he said. "Every time we add a component of processing power, we add another component of bandwidth. We just grow the highway. Every time they grow in DASD [direct-access storage device], we add I/O bandwidth."It seems to be interesting solution. You can read more about it in book
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