Re: More on Database cells, and other terminology
From: Bob Badour <bbadour_at_pei.sympatico.ca>
Date: Tue, 09 May 2006 16:50:45 GMT
Message-ID: <FL38g.5494$A26.140777_at_ursa-nb00s0.nbnet.nb.ca>
>
>
> There is also a sort of column-level view concept in InterBase/Firebird.
> You can define a column and in place of the datatype you say "COMPUTED
> BY" and give an expression, which may reference other columns in the
> table. You can do the same thing in any individual query, but this
> virtual column is stored in the schema.
>
> Regards,
> Bill K.
Date: Tue, 09 May 2006 16:50:45 GMT
Message-ID: <FL38g.5494$A26.140777_at_ursa-nb00s0.nbnet.nb.ca>
>> More important is the ignorant assertion that the dbms cannot derive >> data, which is exactly what views do.
>
>
> There is also a sort of column-level view concept in InterBase/Firebird.
> You can define a column and in place of the datatype you say "COMPUTED
> BY" and give an expression, which may reference other columns in the
> table. You can do the same thing in any individual query, but this
> virtual column is stored in the schema.
>
> Regards,
> Bill K.
Other than syntax, how does that differ from a view or a snapshot? Received on Tue May 09 2006 - 18:50:45 CEST