cross domain relation

suppose I have www.usa.com as main site. I will create www.utah.com..www.indiana.com...etc on same dedicated server with same hosting. After creating those usa-state sites I will register users from www.usa.com and place them under different states and will give them their own site like www.utah.com/andy . Here user Andy was registered from www.usa.com but placed under www.utah.com. If I search user Andy from www.utah.com or www.usa.com i can get his details but i cant get his details from www.indiana.com.

how i can achieve the above like registered from one site but placed in another site? do u recommend one database-multiple domai开发者_开发百科n concept? how should i approach to built this type of application? pls help

From your description it sounds more like your application (as a single app) would be logically organized like this:

usa.com
usa.com/utah
usa.com/utah/andy
usa.com/indiana
...

You could use separate domains for the states through some URL rewriting to achieve what you want. Your application would handle the search logic.

-OR-

The alternative is to setup each site as it's own application. The usa site would just be configured to search each of the state sites (via a query string maybe) and aggregate the results.

I know there are other ways to setup what you are looking for but I think these are probably the two major alternatives.