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Reporting Solution in PHP / CodeIgniter - Server side logic vs client side

I'm building a report for an end user. They would like to see a list of all widgets... but then also like to see widgets with missing attributes, like missing names, or missing size. So i was ...
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Generating stats from large data set

I would like to do a following: I have a fairly large data set, say billions of rows, each row having multiple binary columns. I would like to generate estimated stats with some certainty about those ...