Talk about the main advantages of object-oriented methodology compared to the characteristics of traditional structured analysis and design methods.

Characteristics of Structured Programming:

Advantages: compared to unstructured programs, structured programs offer significant improvements in debugging, readability, and maintainability.

Disadvantages: poor code reusability: designing a new system with a process in mind, most of the code must be rewritten, except for some standard functions.

Due to the continuous development of software and hardware technology and changes in user needs, the system modules designed in accordance with the division of functions are prone to change, making the developed modules of poor maintainability.

The process-oriented model separates the data from the process, and if a data structure is modified, all the processes dealing with the data must be re-revised, which increases the programming workload.

Advantages of Object-Oriented:

And object-oriented modules are organized around real-world concepts, using objects to describe the entities in the problem space, and program code to simulate objects in the real world, making the programming process more natural and intuitive.

Process oriented is function-centered to describe the system, while object-oriented is data-centered to describe the system. Data has more stability compared to function.

Object-oriented simulates communication between objects. Just as people communicate with each other, objects can communicate with each other through messages. In this way, we do not need to know how an object implements its behavior, but only communicate through the interface provided by the object and use the behavioral capabilities of the object. Procedure oriented through the function parameters and global variables to achieve the purpose of the process module connection.

An object-oriented approach breaks down a complex problem into multiple objects (classes) that can perform independent functions, and then combines these objects to complete the complex problem. Using the object-oriented model is like working on an assembly line, we only need to end up with multiple parts (designed objects) in accordance with certain relationships into a complete system. This makes software development more efficient.