BENTONVILLE, Ark. -- Wal-Mart Stores here said last week that it is planning a major expansion of its Web-enabled data warehouse and data-mining system in an effort to provide its suppliers with access to a greater amount of sales history, enhancing the ability to spot long-term trends. The retailer recently expanded the storage capacity of its data warehouse to 101 terabytes from 44 terabytes and is in the process of making additional sales data available to its suppliers. The retailer ...

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