Re: Database schema for univesal usage
From: Kenneth Downs <knode.wants.this_at_see.sigblock>
Date: Mon, 30 May 2005 21:19:45 -0400
Message-Id: <fqqsm2-c2t.ln1_at_pluto.downsfam.net>
>>
>> It was a brief discussion only for the purpose of asking the
>> following two questions which have not yet been answered:
>>
>> 1) Is it clear/true that Date's "abstract machine" necessarily
>> evolves due to change management considerations over
>> time? (eg: expansion of business to include widgets)
Date: Mon, 30 May 2005 21:19:45 -0400
Message-Id: <fqqsm2-c2t.ln1_at_pluto.downsfam.net>
Jan Hidders wrote:
> mountain man wrote:
>>
>> It was a brief discussion only for the purpose of asking the
>> following two questions which have not yet been answered:
>>
>> 1) Is it clear/true that Date's "abstract machine" necessarily
>> evolves due to change management considerations over
>> time? (eg: expansion of business to include widgets)
> > Yes, this is usually known as "schema evolution" and used to be a > popular research subject in the database and data modelling communities.
What came of that research? (I'm googling as we speak, but wondering about your take on it).
-- Kenneth Downs Secure Data Software, Inc. (Ken)nneth_at_(Sec)ure(Dat)a(.com)Received on Tue May 31 2005 - 03:19:45 CEST