OOAD 란??

Object-Oriented Analysis and Design (OOAD) is a software engineering approach that models a system as a group of interacting objects.

Object-Oriented analysis (OOA) applies object-modeling techniques to analyze the functional requirements for a system.

Object-Oriented design (OOD) elaborates the analysis models to produce implementation specifications. OOA focuses on what the system does, OOD on how the system does it.