| help with 3 tables [message #21028] |
Mon, 08 July 2002 04:45  |
a
Messages: 22
Registered: March 2002
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Junior Member |
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How would I find the differences between three tables.. For example
T1 is a table of names (lastname as the primary key) T2 is a table of ages, birthdays, addresses..etc (Ages and Lastnames as the primary keys)
T3 is a table of presents per age (Age as the primary key)
so (T1.lastname = T2.Lastname AND T2.Age = T3.Age)
How do I find out if one
entry has been added or deleted from any of these tables?
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| Re: help with 3 tables [message #21050 is a reply to message #21028] |
Tue, 09 July 2002 06:25  |
AYSEGUL
Messages: 4
Registered: July 2002
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Junior Member |
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you can do a trigger
when table updated or inserted time will be run .
and you must create a different another table and
someone adds a data this tables your other table will be update.
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