REFRESHIN DATA WITHOUT REFRESH BUTTON(REFRESH DATA TABLE DATA)

HI
I HAVE A SHOP SYSTEM WHICH HAS TWO STATION SALE STATION AND CASH DESK(FUND) STATION WHICH WHEN SALE INSERT A REQUEST THE CUSTOMER MUST GO TO TO CASH DESK AND PAY THE MONEY MY SYSTEM USER MUST REFRESH DATA EVERY TIME TOO CHECK NEW RECORD WHAT SHOULD I WHAT  I WANT IS THESE I DO NOT  WANT TO PRESS REFRESH BUTTON TO SEE NEW RECORD WHAT SHOULD I DO TO REFUSE THIS JOB

BEST REGARD'S
JAVAD NIKOO