ASP.net vs PHP (What to choose)
I have been assigned a task to develop a new web application. Its a kind of social web applications, for the sake of understanding you can say its similar to facebook. Now before start developing such huge application i have few questions to ask:

 - First, Does the tool and programing language
       affects the performance of web
       application?

e.g I made two web pages both have same contents over it, the only difference is that one page is made in ASP.net(with C#) and other is made in PHP, now which page opens more fast at user end?
The only purpose of asking this question is that i want to choose one language which is more faster from end user prospective

 - Same is the case with database do i
   need to choose some specific database
   or i can use any database of my choice,
   currently i am considering:


1.MS SQL Server    
2.MY SQL and       
3.Postgres
ASP.net vs PHP (What to choose)
===

I have been assigned a task to develop a new web application. Its a kind of social web applications, for the sake of understanding you can say its similar to facebook. Now before start developing such huge application i have few questions to ask:

 - First, Does the tool and programing language
       affects the performance of web
       application?

e.g I made two web pages both have same contents over it, the only difference is that one page is made in ASP.net(with C#) and other is made in PHP, now which page opens more fast at user end?
The only purpose of asking this question is that i want to choose one language which is more faster from end user prospective

 - Same is the case with database do i
   need to choose some specific database
   or i can use any database of my choice,
   currently i am considering:


1.MS SQL Server    
2.MY SQL and       
3.Postgres