Question
Systematically detail the major architectural execution tasks performed during system design, specifically addressing:
Answer :
Word Count : 735
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System design is a crucial phase in Object-Oriented Analysis and Design (OOAD) where the logical model developed during analysis is transformed into a practical and implementable software architecture. Architectural execution tasks ensure that the software system is efficient, maintainable, scalable, reliable, and capable of meeting both functional and non-functional requirements. These tasks establish the framework that guides the implementation of the entire application and define how various components interact with one another. The first major architectural execution task is identifying the overall system architecture. Designers select an appropriate architectural style such as layered architecture, client-server architecture, Model-View-Controller (MVC), service-oriented architecture, or microservices architecture. The choice depends on system requirements, complexity, scalability, maintainability, and deployment environment. A suitable architecture provides a structured organization of software components and minimizes dependencies between modules. The second task is subsystem decomposition. A large software system is divided into manageable subsystems, each responsible for a specific functionality. Every subsystem contains related classes and objects that collaborate to perform a particular business function. Decomposition improves modularity, simplifies maintenance, encourages code reuse, and allows different development teams to work independently on different subsystems. The third task involves identifying classes, interfaces, and components. The classes identified during analysis are refined by assigning attributes, operations, responsibilities, and relationships. Interfaces define the communication contracts between components, while software components group related classes into deployable units. This process promotes encapsulation
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