Adam wrote:

>>Just in case there's confusion, Firebird does not create multiple
> copies
>
>>of blobs unless the blob itself changes. If other fields are modified,
>>all the record versions will reference the same copy of the blob.
>
> Thanks Ann, I should have mentioned that. In hindsight, I suppose a
> lot of document management systems need to keep older versions anyway
> and so will not delete the old document just because someone has
> changed it.

bitweaver keeps a full copy of the documents in history, for the time
period that you specify, but we are looking at a CVS type approach where
just the differences are stored, so that a complete history can be
maintained without too much over head in space requirements. But
currently this is work in progress ;)

--
Lester Caine
-----------------------------
L.S.Caine Electronic Services
Treasurer - Firebird Foundation Inc.