14 Dec
2009
14 Dec
'09
1:06 p.m.
While at it, it may somewhat add some clarity to know that there are 3 common instances involved in most billing systems, - RESERVE. - COMMIT. - CHARGE. "Charging" for most data services commonly implements the RESERVE-COMMIT model. Here, the necessary credit is temporarily "frozen" beforehand and the actual deduction is implemented at the end of the transaction cycle.