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Re: Another attempt...

From: Andrew Newman <andrewfnewman@gmail.com>
Date: Sun, 23 Mar 2008 23:21:23 +1000
Message-ID: <2db5a5c40803230621q79ea6c17kc42ac7e05dd4fabd@mail.gmail.com>
To: "Arjohn Kampman" <arjohn.kampman@aduna-software.com>
Cc: "Seaborne, Andy" <andy.seaborne@hp.com>, "Richard Newman" <rnewman@twinql.com>, "Lee Feigenbaum" <lee@thefigtrees.net>, "public-rdf-dawg-comments@w3.org" <public-rdf-dawg-comments@w3.org>

On 21/03/2008, Arjohn Kampman <arjohn.kampman@aduna-software.com> wrote:
>   > U - universal relation - a relation with no attributes but contains
>   > all possible tuples of applicable type.
>
>  > 0 - empty relation - the empty relation (no attributes no tuples).
>
>
> These are the definitions of DEE and DUM, not U and 0.
>

These definitions are paraphrasing the definitions on page 259.  I did
not intend to mislead.

The full definitions are:
Let U be the universal relation of type T - i.e., the relation contain
all possible tuples of the applicable tuple type.
Let 0 be the empty relation of type T.
Received on Sunday, 23 March 2008 13:21:55 GMT

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