Difference between Sequence Diagram and Activity Diagram - GeeksforGeeks
An example of UML activity diagram describing a Document Management Process - document is created, reviewed, updated, approved, and at some point archived.
System Sequence Diagrams in UML | Lucidchart
Sequence Diagram
UML Tutorial - Use Case, Activity, Class and Sequence Diagrams - Essential Software Modeling - YouTube
What is the Difference Between Activity Diagram and Sequence Diagram - Pediaa.Com