time and prepared for processing as a single unit or batch. Example: A cheque processing system in a bank. All the cheques received in a particular time frame, say on a particular day are then sorted by the account number and processed in a batch. The following diagram shows the Batch transactions processing application.
When the rubber flapper is compromised, it allows water to run out of the drain causing the toilet to constantly refill. Replacing it is easy--replacements are available at most hardware stores or home centers. Be sure to take the old one with you to find a correctly matching replacement.
You may periodically hear your toilet begin to spontaneously refill, as though someone had flushed it. A toilet that cuts on and off by itself, or runs intermittently, has a problem that plumbers call a phantom flush. The cause is a very slow leak from the tank into the bowl. This problem is almost certainly caused by a bad flapper or flapper seat.