Re: An object-oriented network DBMS from relational DBMS point of view
Date: 12 Mar 2007 11:01:24 -0700
> Every relation, by definition, has a set of attributes
> whose values are unique, and which can therefore
> be used in relational expressions to uniquely identify
> a row. That's all you'd get out of a pointer. Further,
> by requiring the unnecessary pointer, you constrain
> implementations unnecessarily.
But when I lose pointers I lose instance identity. So It is impossible
or very dificult for some table to be a self row. It is not a deal for
Also I lose possibility for some row to be contained by many tables.
WBR, Dmitry Received on Mon Mar 12 2007 - 19:01:24 CET