Re: Logical equivalence of simple and complex types under the relational model?
From: Neo <neo55592_at_hotmail.com>
Date: 1 Dec 2004 07:15:15 -0800
Message-ID: <4b45d3ad.0412010715.16279bd_at_posting.google.com>
Date: 1 Dec 2004 07:15:15 -0800
Message-ID: <4b45d3ad.0412010715.16279bd_at_posting.google.com>
> > What is a type?
>
> A type is a set of values supporting the same operations.
Can a type itself be a value in another set supporting same/similar ops.
For example, ... -1, 0, 1, ... are integers
and 1.2, 3.57, 68.888 are floats.
and integers, floats, fractions are data types.
What is the ultimate type, or least the one that would include data types?
Received on Wed Dec 01 2004 - 16:15:15 CET