What Is a Sequence Diagram? A sequence diagram is an interaction diagram that emphasizes the time ordering of messages ◆The diagram shows The objects participating in the interaction. The sequence of messages exchanged. Sequence Diagrams Object Oriented Analysis and Design 14Object Oriented Analysis and Design 14 What Is a Sequence Diagram?  A sequence diagram is an interaction diagram that emphasizes the time ordering of messages.  The diagram shows: ▪ The objects participating in the interaction. ▪ The sequence of messages exchanged. Sequence Diagrams