What Is an Interaction Diagram? An interaction diagram models the dynamic aspects of the system by showing relationships among objects and the messages they may dispatch. There are two types of interaction diagrams Sequence 吴 Collaboration Sequence Diagram Collaboration Diagram Object Oriented Analysis and Design 10Object Oriented Analysis and Design 10 What Is an Interaction Diagram?  An interaction diagram models the dynamic aspects of the system by showing relationships among objects and the messages they may dispatch.  There are two types of interaction diagrams. ▪Sequence ▪ Collaboration Collaboration Diagram Sequence Diagram