Modeling is the representation of something using a partial accounting of its features and properties. Modeling is the process by which abstract representation and symbols are used to represent complicated systems.
A system is represented by naming its:
elements or parts,
its emergent properties or characteristics.
A systems model, even though it is a partial representation of a real world system, is acted on and treated as if it is the original. A “good” model provides a satisfactory representation under these conditions.
An example of a computational model of a protein in which the molecular shape and structure is represented by "ribbons" as well as balls and sticks.