Sounds made to order for a check constraint on the column of interest.
Pat
>
> Is there any way you can specify that the only permissible values (is it
> called a domain?) that can be entered in varchar2 field in an Oracle
> table to, for example, A, B and C?
>
> We can restrict what values users can enter at the application level,
> but it would be nice to be able to also restrict what can be entered at
> the database level, in case other means of entering data are ever used
> or if the application layer fails, for whatever reason, to trap an
> unwanted value.
>
>
> Thanks
>
> --
> Aidan Whitehall <[EMAIL PROTECTED]>
> Macromedia ColdFusion Developer
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Author: Pat Hildebrand
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