Operationalize orthogonality
From: mAsterdam <mAsterdam_at_vrijdag.org>
Date: Mon, 29 May 2006 11:02:01 +0200
Message-ID: <447ab7bd$0$31643$e4fe514c_at_news.xs4all.nl>
Tony D wrote:
> obvious requirement for a boolean type).
Date: Mon, 29 May 2006 11:02:01 +0200
Message-ID: <447ab7bd$0$31643$e4fe514c_at_news.xs4all.nl>
Tony D wrote:
> ... the relational model is orthogonal to type. That
> means the relational model makes no demands and imposes no
> restrictions on the types available (apart from the
> obvious requirement for a boolean type).
What would the requirements for a dbms be to have this orthogonality implemented?
ISTM the dbms should not have native types
(except boolean and maybe type generators
like relation() and attribute() ) but instead
rely on a lower level, external to the dbms,
type system.
This poses the next question: what would
be the requirements for this type system?
Received on Mon May 29 2006 - 11:02:01 CEST