A dated post, but of interest. If you read the Big Data literature, there is belief that predefined structure becomes less important in the future. " ... Many companies are saddled with data warehouses that weren’t designed to handle big data, but they can evolve their data warehouses into “analytics warehouses” capable of processing structured and unstructured data.
Enterprise data warehouses have reached a crossroads. Companies have spent millions of dollars designing, implementing, and updating them, but few organizations have realized the return they expected from their investments, according to Richard Solari, a director with Deloitte Consulting LLP’s Information Management service line. ... "