More data is always good, but managing and making good use of the vast store of data that businesses already have, particularly the data they can glean from their operational systems, should take precedence says Justin Borgman, founder of Hadapt, a data-analysis software vendor. "Big Data is a great opportunity," said Jeanne Johnson, business-intelligence principal at KPMG. "I think it’s changing the way business is going to be done, but it takes time to get the good foundation to harness the data."

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