What diagrams and charts do you use in analytics and for which processes?

In analytics, I use several key diagrams and charts, each helping in different processes:

• Use Case diagrams — for identifying and describing system requirements from the user's perspective.
• Data Flow Diagrams (DFD) — for visualizing information flows and processes within the system.
• Entity-Relationship diagrams (ER) — for modeling data and their relationships in a database.
• Activity diagrams — for describing business processes and the sequence of actions.
• State diagrams — for modeling the behavior of objects in different states.
• Component and Deployment diagrams — for describing the system architecture and component distribution.

Each of these diagrams helps structure information, improve communication with the team and client, and ensure accuracy in requirements and design.