different applications split by areas?

I already have programmed some small applications, the database design was simple, just one normalized database containing all the datas I need for the application.

Now I want to try to programm something bigger:

There should be 4 websites build with MVC3. All the websites should use only one SQL-Membership-Database and some tables like contacts and so on should be shared between the different pages开发者_StackOverflow中文版 too.

Now my question is: how to start?

Should I put all the Applications into one MVC3-application and just separate them by using areas?

Is there anyone who have got tipps or experiences in creating huge (for me its huge ;-)) applications like this?

Your idea to use areas could very well work. You might need to create some custom roles to restrict access to the four areas.

You will want to do a search on asp.net mvc multi-tenancy. This link http://weblogs.asp.net/zowens/archive/2010/05/26/multi-tenant-asp-net-mvc-introduction.aspx begins a whole series on multi-tenancy.