Re: Semistructured data
From: Marshall <marshall.spight_at_gmail.com>
Date: 26 Oct 2006 14:22:23 -0700
Message-ID: <1161897743.168942.90120_at_k70g2000cwa.googlegroups.com>
> One nice example is disjunctive data from knowledge
> bases. Even that fits, but the representations become rather ugly and a
> RDMBS doesn't really understand them. Lots of extra machinery is needed
> on top of the database to make sense of logical or's, so in this case
> the RDBMS is really used more like a dumb record store, the real
> semantics of the data are never revealed to it, and essentially the
> final, disjunction aware database ends up being emulated on top of the
> RM.
Date: 26 Oct 2006 14:22:23 -0700
Message-ID: <1161897743.168942.90120_at_k70g2000cwa.googlegroups.com>
On Oct 26, 10:58 am, Sampo Syreeni <d..._at_iki.fi> wrote:
>
> One nice example is disjunctive data from knowledge
> bases. Even that fits, but the representations become rather ugly and a
> RDMBS doesn't really understand them. Lots of extra machinery is needed
> on top of the database to make sense of logical or's, so in this case
> the RDBMS is really used more like a dumb record store, the real
> semantics of the data are never revealed to it, and essentially the
> final, disjunction aware database ends up being emulated on top of the
> RM.
Can you give an example? I understand all the words in the above but I can't construct a clear picture of what you're talking about.
Marshall Received on Thu Oct 26 2006 - 23:22:23 CEST