What are Design Classes?

In system design, design classes refer to the blueprint or structure of how a software system will be constructed. These classes outline the organization and behavior of various components within the system. Design classes delve into the specifics of how the system will operate, focusing on factors like efficiency, scalability, and maintainability.

• Design classes encapsulate the implementation details, such as methods, attributes, and relationships between different parts of the system.
• They define the internal workings of the software, including algorithms, data structures, and interactions between modules.
• Design classes build upon the findings from analysis classes, which identify the requirements and goals of the system without diving into implementation details.
• Design classes translate these requirements into a concrete plan for how the system will be built.

Overall, design classes play a crucial role in system design by providing a structured framework for developers to follow during the implementation phase.

Characteristics of Design Classes

• Focus on specifying how the system will be built and operated.
• Concrete representation detailing methods, attributes, and interactions.
• Incorporate implementation details, such as algorithms and data structures.
• Translate requirements into a structured plan for development.
• Typically depicted through class diagrams, sequence diagrams, or design patterns.

Usage of Design Classes

• Follow analysis classes to translate requirements into a detailed design.
• Specify the internal structure and behavior of software components.
• Address concerns related to efficiency, reusability, and maintainability.
• Serve as a blueprint for coding and implementation.
• Used to create class diagrams, sequence diagrams, and design documentation for developers.

In System Design, understanding the difference between design classes and analysis classes is crucial. Analysis classes are like detectives they investigate and understand the problem at hand. They focus on what the system needs to do, without diving into how it will be done. These classes help developers grasp the requirements and goals of the software. While the design classes are like architects they take the findings from analysis classes and create a plan for how the software will work.