URl's?????

Hi all,
I am pretty unsure if i could post this Q on this board,but can anyone out there please tell me any URL's ,who r dedicated to system analysis and design,Just like this one,(dedicated to c,c++) giving out sample DFDs,or CASE tools etc,
I just cant locate appropriate one,by using any of the search engines.....
thanks in advance........

There are many system analysis and design methods and tools. I don't know what you're exactly looking for. But here are a few links.

http://www.omg.org
http://www.uml.org
http://www.methods-tools.com/
http://www.well.com/user/ritchie/oo.html
http://www.slac.stanford.edu/~marino...ch/method.html
http://www.inf.ufsc.br/poo/ine5383/oose.html