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  Friday, November 07, 2008 – Permalink –

Null, Nothing, Nada

Empty entries


"An example might be fax numbers in a customer database. If you store a Null, it means you don't know whether the customer has a fax number.

If you store a zero-length string, you know the customer has no fax number.
Access gives you the flexibility to deal with both types of 'empty' values."


Nulls and Zero-Length Strings

From John L. Viescas at Viescas.com


Also:
Make Null Zero

[Edited entry from 8/16/2005]




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<Doug Klippert@ 4:08 AM

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