model 1. A representation, usually on a smaller scale, of a device, structure, etc. 2. A quantitative or mathematical representation or computer simulation which attempts to describe the characteristics or relationships of physical events
patterns(Principles that guide developers as they assign responsibilities to software classes and design system behavior. They are most useful when creating collaboration diagrams where messages imply responsibility)
model(A mathematical or graphical representation of a real-world situation or object. For example, a mathematical model of the distribution of matter in the universe, a spreadsheet (numeric) model of business operations, or a graphical model of a molecule)
