Re: Database design: Backwards-compatible field addition

On Wed, Jun 18, 2008 at 02:04:14PM +0200, David wrote:

> 1) table1 becomes a view of an updated table, with a 'WHERE field4 IS
> NULL' clause.
>
> Problem with this is that some RDBMS (Postgresql specifically) don't
> let you run update statements on views.

Given 1) the view will be "fairly uncomplicated" and hence
"fairly straightforward" ON INSERT/UPDATE/DELETE rule can
likely be added to it allowing for an apparently writable
view.

Karsten
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