Overview of Systems Development
• Object-oriented development
_Object is basic unit of systems analysis and design
• Object:
_Combines data and the processes that operate on those data
_Data encapsulated in object can be accessed and modified only by operations, or methods, associated with that object
_Object-oriented modeling based on concepts of class and inheritance
.Objects belong to a certain class and have features of that class
.May inherit structures and behaviors of a more general, ancestor class