Oracle FAQ Your Portal to the Oracle Knowledge Grid
HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US
 

Home -> Community -> Usenet -> comp.databases.theory -> Re: Logical equivalence of simple and complex types under the relational model?

Re: Logical equivalence of simple and complex types under the relational model?

From: Paul <paul_at_test.com>
Date: Wed, 01 Dec 2004 22:31:00 +0000
Message-ID: <41ae4624$0$52989$ed2619ec@ptn-nntp-reader03.plus.net> 





Alfredo Novoa wrote:

>> The way I see it, DBMSs consist of two (orthogonal) components: a
>> type system and a relational system.




> 

> The "relational system" can not exist without the type system, so

> they are not independent.




Can it definitely not? Couldn't you have a basic relational system with 
just one type, with one operation (equality) being handled by the 
relational system?



This would be a kind of pathological relational system, which can 
optionally be extended in usefulness by the addition of a type system.



Paul.
Received on Wed Dec 01 2004 - 16:31:00 CST












Original text of this message













  HOME |
  ASK QUESTION |
  ADD INFO |
  SEARCH |
  E-MAIL US