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Home -> Community -> Usenet -> comp.databases.theory -> Re: General Form of Relationships?
> The most general way to view a "relationship" among a set of n variables
> is as an arbitrary subset of n-space. (In your examples, the variables
> may come from other sets S_1, ..., S_n instead of the real number line,
> in which case a "relationship" is a subset of the cartesian product
> S_1 x S_2 x ... x S_n .)
I didn't state my question clearly but your post triggers an idea. Suppose the x-axis represents a set of balls and the y-axis a set of colors, then a dot at x,y would indicate "ball2 is Red". How to extend this system to represent "ball between box and chair"? Could I suppose 3-axes where each represents the set of all things in a room. Then a dot a x,y,z would indicate what thing is between two other things? Received on Tue Dec 31 2002 - 17:15:34 CST