Lecture 7 - UML SEQUENCE Diagram (മലയാളത്തിൽ) 

Interaction diagrams depict interactions of objects and their relationships. They also include the messages passed between them. There are two types of interaction diagrams −
• Sequence Diagrams
• Collaboration Diagrams
Interaction diagrams are used for modeling −
• the control flow by time ordering using sequence diagrams.
• the control flow of organization using collaboration diagrams.