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: Distributivity in Tropashko's Lattice Algebra

Re: Distributivity in Tropashko's Lattice Algebra

From: vc <boston103_at_hotmail.com>
Date: 17 Aug 2005 13:00:49 -0700
Message-ID: <1124308849.857242.171740@g44g2000cwa.googlegroups.com> 






Mikito Harakiri wrote:


> vc wrote:

> > To sum up,  the three '1' '0' combinations are :

> >

> > 00 union A = 01

>




I corrected my mistake in the next message.




> No rowids, then. Sigh.




No rowids in the correct version either since the result of '00 union A
is either 01 or 00' depending on whether A is empty or not.  How do you
propose to encode rowids with one empty tuple per relation ?
Received on Wed Aug 17 2005 - 15:00:49 CDT












Original text of this message













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