Object-oriented Analysis & Design

A development project is traditionally divided into phases, e.g.:

Analysis: investigating what is to be developed.
Design: of a system architecture.
Programming: implementing the solution in a executable program.

Within the area of Object-oriented analysis and design (OOA/OOD) there are techniques, methods and notations for modelling, analyzing user requirements and specifying software systems prior to implementation, which are based on object-oriented concepts.

There are a number of published methods in this field. Some examples are:

Objectory (Bibliography: Jacobson).
Object Modeling Technique - OMT (Bibliography: Rumbaugh et al).
The Booch Method (Bibliography: Grady Booch).

These methods include techniques for building object-oriented models (using objects and classes as building blocks), and notations for documenting these models with diagrams, as well as several other aspects of developing software.