Re: separation of church and state?
Date: Sat, 06 Oct 2007 17:25:17 GMT
David Cressey wrote:
> I think you're extrapolating Date's remarks to a point that he might not
> agree with. A table with an index is still a table.
I *suppose* it is but only in the interest of getting along with the rest of the world, most of whom I think would agree with you. It's just that I've never seen a formal definition of a table as a mathematical object, only as a graphical analogy to a relation, without respect to an algebra. Therefore, I don't understand how dbms's manipulate tables in a relational way. It seems to me that they must need to manipulate relations or relation variables instead. Received on Sat Oct 06 2007 - 19:25:17 CEST