A program is an established set of instructions that a computer tracks to perform a task. The program is put into a storage area manageable to the computer and memory can also comprise the information that the instruction operates on. The computer program changes to one instruction and accomplishes it and then gets the following instruction. Programs can be considered as interactive or batch in relations of what drives them and how constantly they run. An interactive program obtains data from an interactive user or perhaps from another program that put on an interactive user. A batch program tracks and does it work and then stops and can be in progress by interactive users who appeal their interactive program to run the batch program.