Explain the DFD level 1 and data dictionary (process)

'erifies the customer's account by checking their details against the store. ogin Details erification result (True/False) TART READ Login Details RETRIEVE customer information from Data Store using customer id and password IF customer id found CHECK if the password matches IF password matches, RETURN True (Account Verified) ELSE RETURN False (Incorrect Password) ELSE RETURN False (Customer Id not found) END