Question

What is a system ? How is a model different from a system ? Explain briefly?

Answer 1

Answer:
• A model is an abstract view of a system that ignores system details.
Complementary system models can be developed to show the system’s
context, interactions, structure and behavior.
• Context models show how a system that is being modeled is positioned in
an environment with other systems and processes.
• Use case diagrams and sequence diagrams are used to describe the
interactions between users and systems in the system being designed. Use
cases describe interactions between a system and external actors;
sequence diagrams add more information to these by showing
interactions between system objects.
• Structural models show the organization and architecture of a system.
Class diagrams are used to define the static structure of classes in a
system and their associations.

I Hope it will help!

^_^

Answer 2

model is an abstract view of a system that ignores system details. Complementary system models can be developed to show the system'scontext, interactions, structure and behavior. ... Use case diagrams and sequence diagrams are used to describe the interactions between users and systems in the system being designed