The development of structured systems and the method of object-oriented development

Structured System Development Methodology:

System analysts, software engineers, programmers, and end users in accordance with the principle of user-oriented, top-down analysis and design and the bottom-up step-up implementation of a computer information system is a process of organizing, managing and controlling the information system development process is a basic framework.

Three parts:
Management Strategy section: Emphasis on system development planning, process scheduling, evaluation, monitoring, and feedback.
Development Strategy Part: Task breakdown structure, WBS priority structure, development experience, development standard.
The development process is divided into: System planning stage, system analysis stage, system design stage, system implementation stage, system operation and maintenance stage structure development
Early program development, such as the C language, is a structured approach to development.

Object-oriented development approach:
Now the more common development method for object-oriented development, divided into analysis, design, programming three parts.
Object-oriented development has added the concept of "object". For example, I want to write a game in which the role of the game is an object, and the enemy is an object, so that we can reduce the development burden by managing each object.

Analysis of each method:

In terms of concept, structured software is a set of functions, which is realized by hierarchical call relationships between modules and modules, and object-oriented software is a collection of objects, which is realized through communication between object and object. Structured software is a collection of processes and data, and a process-centric one, from a constituent perspective. Object-oriented software is the encapsulation of data and corresponding operations, object-centric, and from the aspect of Operation control, the structured software adopts sequential processing method, which is controlled by process, and the object-oriented software adopts interactive and parallel processing methods. By message-driven control; From a development perspective, the focus of the structured approach is on design; the object-oriented approach focuses on analysis.

The development of structured systems and the method of object-oriented development