Answer:
A class may be a structured diagram that describes the structure of the system.
It consists of sophistication name, attributes, methods, and responsibilities.
A mailbox and an email message have certain attributes like, compose, reply, draft, inbox, etc.
Software architecture affects:
Performance, Robustness, Distributability, Maintainability.
Explanation:
See attachment for the Model object classes which may be utilized in the system implementation to represent a mailbox and an email message.
Advantages:
Large-scale reuse Software architecture is vital because it affects the performance, robustness, distributability, and maintainability of a system.
Individual components implement the functional system requirements, but the dominant influence on the non-functional system characteristics is that the system's architecture.
Three advantages of System architecture:
• Stakeholder communication: The architecture may be a high-level presentation of the system which will be used as attention for discussion by a variety of various stakeholders.
• System analysis: making the system architecture explicit at an early stage within the system development requires some analysis.
• Large-scale reuse:
An architectural model may be a compact, manageable description of how a system is organized and the way the components interoperate.
The system architecture is usually an equivalent for systems with similar requirements then can support large-scale software reuse..
