What is a schematic diagram?

A schematic diagram is a drawing presentation showing significant parts or task of device, process or project using standard or graphic symbols rather than realistic pictures. Projects managers use it to prepare preliminary cost estimates while organizations employ it in defining the chain of command and other organizational structure.

The schematic diagram uses all the necessary details needed to convey the information and may use unrealistic elements for easy comprehension. Every task or process has its color or symbol to avoid confusion. The main advantage of a using a schematic is the ability to break down a complicated process or structure into units that can easily be understood by everyone.