Re: The Fact of relational algebra (was Re: Clean Object Class Design -- What is it?)

Hi,

Im jumping in on this thread, because there has always something bothering me about relational algebra that I want to get an answer to.

Ive often heard that rdbms are based on relational algebra, a branch of mathematics. When I studdied mathematics, a long time ago I admit, I never encountered relational algebra. The nearest thing I can hazily remember are 'relations', which are what you guys would call binary tuples. The algebra we used was quite different than the one put about by the rdbms guys.

So where can I learn about 'relational algegra'. Does it really exist?

When applying relational algebra to computing, is it a fair assumption to say that it is a value based system? Mathematics always seemed more like an identity based system to me.

Daniel Poon

danielp
at
romaxtech
dot
com Received on Wed Oct 03 2001 - 12:46:20 CEST