I think the kind/amount of data and type of analysis that is to be performed on the data should probably lead the decision. Scenarios where you have hundred of GBs of data having to perform text analysis on them, probably would make me think in terms of flat files. But for simple web apps, probably RDBMS or a NoSQL store is the way to go.
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I think the kind/amount of data and type of analysis that is to be performed on the data should probably lead the decision. Scenarios where you have hundred of GBs of data having to perform text analysis on them, probably would make me think in terms of flat files. But for simple web apps, probably RDBMS or a NoSQL store is the way to go.