I want to make portal with subdomains. here is example:
Main page (login + urls to all subdomains):
www.car.com
Subdomains:
www.bmw.car.com www.audi.car.com etc here will be many many more sites
What i want to accomplish is:
Common loggin and authorization (for example if you'll log in to bmw.car.com you will be automaticaly logged in audi.car.com)
Common database (every articles will be in 1 database but this is easy problem to manage just by module for example)
Every site will have own layout (depend on module audi/bmw). Dierences in layout will be in db.
how to achieve this?
Conclusion:
I want to have one site which will load different data depends on subdomain name. How i should regonize subdomains? And second question, will google recognize each site as independent site? Its is very important to me.