Re: Demo: Modelling Cost of Travel Paths Between Towns

> > In RM's current solution, symbol and town name are the same thing
> > resulting in inflexiblity in above case. In XDb2's solutions a symbol
> > or string names a town which is a different thing than the symbol or
> > string. RM has its own advantages which I did not list here.
>
> What you are not realizing is that "town" would never be a Primary Key, so
> it is easy in the RM to have more than one town with the same name. No big
> deal.

True in general, but not when using the one-table schema provided by Mr. Celko. Please show how the current RM solution can work if two towns are named the same (ie change name of town c to a). Received on Fri Nov 12 2004 - 23:54:30 CET