The Ptolemaic system belived that the earth was the center of everything and all the planet and sun traveled around it and the copernican system belived that the sun was the center of everything and the planets and traveled around the sun.
System is the interrelated component that work together for common purpose/goals and Information system is a collection of components that work together to produce useful information for decision...
There are MANY different storage systems. Generally, they're broken up into three classifications: Magnetic Media Optical Media Flash & SD Media There are others, as well, but they are less...