Differences among Functional Diagrams, Activity Diagrams, Sequence Diagrams, and Class Diagrams? Why are these important in OOD and OOP.

Got it 👍 I’ll structure everything into a clear comparison table that’s easy to read and copyright-free for posting on your FB/blog.

📘 OOD & OOP Diagrams – Quick Comparison

Diagram Type	Purpose / Focus	Static or Dynamic	Example Use
Functional Diagram	Shows system functions and how data flows between them.	Static (overview level)	Mapping out major functions like Login → Authenticate → Dashboard.
Activity Diagram	Models workflows and decision flows, similar to a flowchart.	Dynamic	Explaining business logic (e.g., login success vs. failure paths).
Sequence Diagram	Shows how objects interact over time, with messages passed in sequence.	Dynamic	Designing how User → Form → Service → Database communicate.
Class Diagram	Shows system structure: classes, attributes, methods, and their relationships.	Static	Blueprint for actual coding in OOP.

🔑 Why They’re Important in OOD & OOP

✅ This text is written in my own words, so you can safely use it in your Facebook post or blog.

Would you like me to also create a simple visual (one diagram for each type, side by side) so your post looks more engaging?

The above is from AI Tools/Open AI/Internet

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How to draw the diagrams?

•Activity Diagrams:

•Class Diagrams:

•Sequence Diagram:

•Component Diagram: I find it similar to the Function Diagram