and they are different from the atoms of all other elements. For example, copper and gold are elements. A piece of gold contains only gold atoms. A piece of copper contains only copper atoms.

The fundamental data structure in a data processing system. Any unit of data defined for processing is a data element; for example, ACCOUNT NUMBER, NAME, ADDRESS and CITY. A data element is ...

A few of these elements can be found pure in a natural state. For example, graphite and diamond can be found in rocks in the Earth’s crust, and they are forms of the element carbon. Gold is an ...