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Same here. I'm interested in figuring out q/kdb, but it seems a bit opaque.

As someone who had to teach myself kdb/Q recently, I can recommend the Q for Mortals book: http://code.kx.com/wiki/JB:QforMortals2/contents

This is a bit of a plug but anyone interested in learning about kdb/Q can take a look here: http://www.timestored.com

They have some interactive, online kdb/Q tutorials with programming questions and answers to try out the language and get a feel for it.

There is also an IDE for day-to-day users of kdb/Q with lots of convenient features

It is opaque - but somehow big banks and other clients dish out millions of dollars in licensing fees to bring this in... and the reason is that it works really well as a time-series tick-data store ...

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