Although there are numerous books on object-oriented programming, few go beyond a presentation of terminology, notation and the structure of a unique model. Written by a co-developer of one of the most popular OOA/OOD methods, this exceptionally practical and authoritative casebook shows how object-oriented analysis and design are actually practiced in developing real systems—i.e., shows the insight (rather than the technique) that was applied at each step in a solution—false starts and all. Presents two very realistic case studies—one with a predominant reactive view and one with a predominant data view—and shows how the principles of object-oriented analysis and design are applied to them.