Can a bank check the balance of the accounts of another bank?
I don't think a bank can check the balance of the other accounts of another bank. This is because each bank has its own systems that it uses and doesn't share it with other banks.
If they are processing your transaction many banks can instantly check it. Even the gas station does it when you use a debit card to fill up with gas. They verify you have funds and then put a hold on the money that is to be used.
yes that is how you can use your atm card at other banks.
No sir , that is all personal information that is not shared unless requested & approved. There is not a sever in the world that contains balances of all banks' customers.