Help in understanding AIX

Dear ALL,

Where can I get the following information?

what will happen exactly when i hit CTRL+C, CTRL+Z, CTRL+X, CTRL+D etc when the AIX terminal hangs...?

The reason why I am asking this question is when ever I type a command at the terminal (say "select * from tab" or any command) the terminal hangs .

Apparently I will type one of the CTRL+C, CTRL+Z, CTRL+X, CTRL+D and will the get the command prompt or some times the terminal exits...

Thanks

They can be looked up via your favourite search engine or in books about unix.

Usually they send a signal to stop processes. If you do that too hasty you could kill your shell and so end your session.
Something like that should not be very common - maybe check why your commands hang or ask your admin.