1/26/2022

Chat Sequence Diagram

Sequence diagram online
Notation DescriptionVisual Representation

Actor

  • a type of role played by an entity that interacts with the subject (e.g., by exchanging signals and data)
  • external to the subject (i.e., in the sense that an instance of an actor is not a part of the instance of its corresponding subject).
  • represent roles played by human users, external hardware, or other subjects.

Note that:

  • An actor does not necessarily represent a specific physical entity but merely a particular role of some entity
  • A person may play the role of several different actors and, conversely, a given actor may be played by multiple different person.

Lifeline

  • A lifeline represents an individual participant in the Interaction.

Activations

  • A thin rectangle on a lifeline) represents the period during which an element is performing an operation.
  • The top and the bottom of the of the rectangle are aligned with the initiation and the completion time respectively

Call Message

  • A message defines a particular communication between Lifelines of an Interaction.
  • Call message is a kind of message that represents an invocation of operation of target lifeline.

Return Message

  • A message defines a particular communication between Lifelines of an Interaction.
  • Return message is a kind of message that represents the pass of information back to the caller of a corresponded former message.

Self Message

  • A message defines a particular communication between Lifelines of an Interaction.
  • Self message is a kind of message that represents the invocation of message of the same lifeline.

Recursive Message

  • A message defines a particular communication between Lifelines of an Interaction.
  • Recursive message is a kind of message that represents the invocation of message of the same lifeline. It's target points to an activation on top of the activation where the message was invoked from.

Create Message

  • A message defines a particular communication between Lifelines of an Interaction.
  • Create message is a kind of message that represents the instantiation of (target) lifeline.

Destroy Message

  • A message defines a particular communication between Lifelines of an Interaction.
  • Destroy message is a kind of message that represents the request of destroying the lifecycle of target lifeline.

Duration Message

  • A message defines a particular communication between Lifelines of an Interaction.
  • Duration message shows the distance between two time instants for a message invocation.

Note

A note (comment) gives the ability to attach various remarks to elements. A comment carries no semantic force, but may contain information that is useful to a modeler.

Chat

Chat Sequence Diagram

2.6.2 Chat Form Figure 4: Use Case Diagram of Chat Form 13 21. 2.6.3 Maintenance Figure 5: Use Case Diagram of Maintenance 14 22. 2.6.4 Monitor Figure 6: Use Case Diagram of Monitor 15 23. 2.7 Activity Diagram 2.7.1 Authentication System, Maintenance, Monitor Figure 7: Activity Diagram of Authentication System, Maintenance, Monitor 16. This is the UML sequence diagram of Internet Chat System which shows the interaction between the objects of Conference, Individual, Group, Status, Notifications. The instance of class objects involved in this UML Sequence Diagram of Internet Chat System are as follows.

Chat Sequence Diagram Software

Chat

Sequence Diagram Editor

  1. Yippy!Chat is an online chat application, with most of the features of Skype. It comes with Skype-style list of friends, with provisions to block certain contacts. You can also do video/audio chat with your friends who are using Yippy!Chat. Files sharing is possible while chatting.
  2. SequenceDiagram.org is an online tool / software for creating UML sequence diagrams. Founded in 2014 with the purpose to improve the efficiency when creating and working with sequence diagrams by combining text notation scripting and drawing by clicking and dragging in the same model.
  3. Chat sequence diagram ( Sequence Diagram (UML)) Use Creately’s easy online diagram editor to edit this diagram, collaborate with others and export results to multiple image formats. We were unable to load the diagram. You can edit this template and create your own diagram. Creately diagrams can be exported and added to Word, PPT (powerpoint), Excel, Visio or any other document.