Nice question illustrating the effect of NULLs on CHECK constraints, which I suspect confuses many people. Not surprising that 60% of answers so far have it wrong.

Looking for FALSE...

Hugo Kornelis (4/30/2015)

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I am convinced that it will never be...

I think I must be getting old and decrepit. Got it right, but it strained my brain 🙁

I wonder how many people...

Sergiy (4/27/2015)

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CELKO (4/22/2015)

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An identifier (<something>_id) is measured on a nominal scale. Math makes no sense on such scales -- what is your credit card number divided by the UPC code...

Automatic

Lynn Pettis (4/27/2015)

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How many people does...

Grant Fritchey (4/27/2015)

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I reject your test as completely invalid and a waste of my time and superior intellect along with my ability to craft nonsensical run-on sentences for no purpose...

spike

CELKO (4/27/2015)

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Calling either a scalar is outrageous: neither is "a quantity having magnitude but no direction, and representable by a single real number" since neither is a quantity...

Out

Very nice question.

It's interestng that 12% or answers to date appear to come from people who beleive that allorders in any given year must occur on teh same date. ...

Thanks for thh nice simple question.

It's quite amusing that 10% of responses so far indicate that people believe tempdb can be dropped. :w00t:

CELKO (4/23/2015)

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ISBN is displayed with dashes for human convenience, but it's actually composed of elements .. again, under the rules for 1NF, each of those should be stored...

Lynn Pettis (4/23/2015)

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CELKO (4/22/2015)

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Also, since you are so picky about using the correct terms, distance divided by time equals velocity!

Maybe...