alen teplitsky (8/20/2010)

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been building on and off since the 1990's but it's not really fun anymore with everything being integrated and things like the computer being quiet being more important...

jcrawf02 (8/20/2010)

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One last comment, and then I'll leave it alone.

I think it's over-theorizing, since the user won't care about the rotations on the SSD. Users only look at data...

jcrawf02 (8/20/2010)

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mtillman-921105 (8/20/2010)

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jcrawf02 (8/20/2010)

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mtillman-921105 (8/20/2010)

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I suppose that I'm answering my own question here but...

It would...

jcrawf02 (8/20/2010)

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mtillman-921105 (8/20/2010)

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I suppose that I'm answering my own question here but...

It would be for...

I suppose that I'm answering my own question here but...

It would be for removing the...

Nadrek (8/19/2010)

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I'll simply agree with statements from two prior posts, slightly reworded:

1) In practice, with normal humans using the data, NULL must have an explicit operational definition to be meaningful....

Steve Jones - Editor (8/19/2010)

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Variables in algebra can be. That's what I thought, but if I have X and Y in two equations, it's not unknown. It's unsolved, perhaps, but...

Tom.Thomson (8/17/2010)

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Various parts of mathematics use a NULL-like concept. The ones which to me seem to be the closest to the NULL of relational databases crop up in Chris...

David Webb-200187 (8/18/2010)

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Redefining NULL on a whim? You can't redefine something that doesn't have a good definition to start with. N/A, unknown, not yet entered, incomplete, etc. can...

Steve Jones - Editor (8/18/2010)

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It could be N/A, but that implies a specific meaning. Using NULL there as a placeholder works, but you are assigning a value to NULL. I...

Steve Jones - Editor (8/18/2010)

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NULL seems like a variable to me, in an equation that can't be currently solved. Or maybe like "i". We know that it has some value,...

Jeff Moden (8/17/2010)

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Alain Rastoul (8/17/2010)

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Hi Jeff,

Here you'll find 3 papers from E.F.Codd ,

A Relational Model of Data for Large Shared Data Banks

http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.98.5286&rep=rep1&type=pdf

Extending the Database Relational Model to Capture...

Steve Jones - Editor (8/16/2010)

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I bought my last one from a place in MO. I searched around and found a place that some friend had used, and ordered one through...

You'll toss in a prize? Thank you sir!

Yahoo is the one...