hi guys

I really don't know anything about MAC anyway i have to design a database and a website connected to it. I know on windows there is visual studio and sql server 2008 R2 which can be useful on my situation but i would like to develop this application on mac.Is there any software on Mac that i could use????
If anyone has used visual studio + sql server 2008 and the software on Mac which one do you think is a better software for this application???

Not knowing anything about a Mac has nothing to do with your project -- you need to know about relational databases (structures, best practices, etc.) and about data access methods via software. If you have a strong grasp of those two things, then the platform you implement them with boils down to a triviality.

Mac OS X doesn't support Visual Studio, but it supports plenty of languages that can access a relational database (mySQL, PostgreSQL, FileMaker Pro, etc.) such as php and ruby, which are well-suited for web-based applications.

If you can describe exactly what you're looking to do with your project in greater detail, perhaps we can give you more direction on where to look.