15 Sequence Diagram Message Types. These diagrams are used to illustrate an arrow from the message caller to the message receiver specifies a message in a sequence diagram. A sequence diagram is a form of interaction diagram which shows objects as lifelines running down the page, with their interactions over time represented as messages drawn as arrows from the source lifeline to the target lifeline.
The basic syntax for a line in a sequence diagram shows that one participant is sending a message to another participant words about what participants are in general. We call this content an interaction. A self message is a type of message which represents the execution or operation call in the same object lifeline.
Message & focus of control.
15 Sequence Diagram Message Types. Text of response message below the arrow. Change sequencenumbering property of sequence diagram or communication diagram to custom. Objects are the basic building block of uml diagrams. Sequence diagram is the most common kind of interaction diagram , which focuses on the message interchange between a number of lifelines.