As a designer I understand what catalyst can do, but I do not understand how Flash Builder could extend my work. So, if I publish a catalyst project and want the programmer to add a database where peoople could sign up and upload pictures; then those pictures become part of project. Is this possible? I 'd really like to see more finished examples of what builder could do to extend a catalyst project because I have no idea.
Definitely possible with the combination of Flash Catalyst and Flash Builder.
Here are a few good sites to see related examples and tutorials: