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Deriving Age from Date of Birth

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Steve Schapel View Drop Down
Microsoft MVP
Microsoft MVP

Joined: 04 Jul 2009
Status: Offline
Points: 10
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    Posted: 04 Jul 2009 at 12:26pm
Deriving Age from Date of Birth, Allowing for Leap Years
I guess it’s a common mistake, especially for those new to database work, to store the Age of a person in a database table.

Of course, the main reason that this is a bad idea is that age changes, so keeping the stored data accurate in such a case becomes a near impossibility.

The usual advice, therefore, is to store the Date of Birth (which does not vary), and calculate the Age whenever it is required for the purposes of the database application...

Read more here:

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