Application Access details I have a view and I need to remove a column in the view. Before doing that modification I need to determine which are all the applications that access the view. I need that information so as to make sure that removing the column would not break any application code that access the view. 

Is there any DMV or system stored procedure that contains such information? Or is there any system tables that store such information?
If you do not have access to the code from the applications accessing your database, using the Profiler over a reasonable period of time, as commented by @nelson-casanova, is your best option. 

If you do have access to the application code, check there.  Also check the definition of any stored procedures, functions, or other views.

I presume you need the column removed for security reasons?  If so, perhaps you can modify your view to use IS_SRVROLEMEMBER and return those columns only when authorized? Copy your view and name it 'original_view', copy your view and edit your columns then and name it 'modified_view.  Now edit your view and call the new views:

IF IS_SRVROLEMEMBER ('role_view_all') = 1      
   select * from original_view;   
ELSE IF IS_SRVROLEMEMBER ('role_view_all') = 0      
   select * from modified_view;


If there is an application that you missed in your Profiler run, you can temporarily add that application's user(s) to the 'role_view_all' role, while developers sort out a workaround or fix their queries.