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What does a collaboration diagram resemble?
What does a collaboration diagram resemble?
What is a collaboration in object-oriented systems?
What is a collaboration in object-oriented systems?
What is the primary purpose of a collaboration?
What is the primary purpose of a collaboration?
How do objects collaborate with each other?
How do objects collaborate with each other?
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What is the first step in creating a collaboration diagram?
What is the first step in creating a collaboration diagram?
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What is the purpose of a specification level collaboration diagram?
What is the purpose of a specification level collaboration diagram?
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What is represented by rectangles with naming labels in a collaboration diagram?
What is represented by rectangles with naming labels in a collaboration diagram?
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How many major components does a collaboration diagram have?
How many major components does a collaboration diagram have?
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What is the purpose of noting an object's property or state in a collaboration diagram?
What is the purpose of noting an object's property or state in a collaboration diagram?
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What is the primary role of an actor in a collaboration diagram?
What is the primary role of an actor in a collaboration diagram?
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What type of line is used to depict a link between objects and actors in a collaboration diagram?
What type of line is used to depict a link between objects and actors in a collaboration diagram?
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What do messages between objects convey in a collaboration diagram?
What do messages between objects convey in a collaboration diagram?
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What is the primary focus of a sequence diagram?
What is the primary focus of a sequence diagram?
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Why are both collaboration and sequence diagrams often required to describe a system's behavior?
Why are both collaboration and sequence diagrams often required to describe a system's behavior?
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What does a thin rectangle on a lifeline represent in a sequence diagram?
What does a thin rectangle on a lifeline represent in a sequence diagram?
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What type of message represents the invocation of an operation of a target lifeline?
What type of message represents the invocation of an operation of a target lifeline?
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What is the purpose of a note in a sequence diagram?
What is the purpose of a note in a sequence diagram?
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What is another name for a collaboration diagram?
What is another name for a collaboration diagram?
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What type of message represents the pass of information back to the caller of a corresponding former message?
What type of message represents the pass of information back to the caller of a corresponding former message?
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What does a recursive message represent in a sequence diagram?
What does a recursive message represent in a sequence diagram?
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What is represented by a lifeline in a sequence diagram?
What is represented by a lifeline in a sequence diagram?
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What type of message represents the request to destroy the lifecycle of a target lifeline?
What type of message represents the request to destroy the lifecycle of a target lifeline?
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What is the primary purpose of UML interaction diagrams?
What is the primary purpose of UML interaction diagrams?
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What type of diagrams do sequence diagrams describe?
What type of diagrams do sequence diagrams describe?
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What is the primary focus of a system sequence diagram?
What is the primary focus of a system sequence diagram?
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What is the role of an actor in a sequence diagram?
What is the role of an actor in a sequence diagram?
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What is the purpose of a sequence diagram in predicting the behavior of a system?
What is the purpose of a sequence diagram in predicting the behavior of a system?
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What is the main difference between a sequence diagram and a communication diagram?
What is the main difference between a sequence diagram and a communication diagram?
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What is the primary benefit of using sequence diagrams in system modeling?
What is the primary benefit of using sequence diagrams in system modeling?
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What is the purpose of a collaboration diagram in UML interaction diagrams?
What is the purpose of a collaboration diagram in UML interaction diagrams?
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What does the top of a thin rectangle on a lifeline align with?
What does the top of a thin rectangle on a lifeline align with?
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What is the purpose of a self message in a sequence diagram?
What is the purpose of a self message in a sequence diagram?
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What does a destroy message represent in a sequence diagram?
What does a destroy message represent in a sequence diagram?
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What is the primary focus of a collaboration diagram?
What is the primary focus of a collaboration diagram?
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What is represented by a lifeline in a sequence diagram?
What is represented by a lifeline in a sequence diagram?
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What type of message represents the invocation of an operation of a target lifeline in a sequence diagram?
What type of message represents the invocation of an operation of a target lifeline in a sequence diagram?
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What is the purpose of a note in a sequence diagram?
What is the purpose of a note in a sequence diagram?
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What type of message represents the pass of information back to the caller of a corresponding former message in a sequence diagram?
What type of message represents the pass of information back to the caller of a corresponding former message in a sequence diagram?
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What is the primary focus of a sequence diagram?
What is the primary focus of a sequence diagram?
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What does a recursive message represent in a sequence diagram?
What does a recursive message represent in a sequence diagram?
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What is the primary purpose of noting an object's property or state in a collaboration diagram?
What is the primary purpose of noting an object's property or state in a collaboration diagram?
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What is the primary difference between a collaboration diagram and a sequence diagram?
What is the primary difference between a collaboration diagram and a sequence diagram?
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What do links in a collaboration diagram represent?
What do links in a collaboration diagram represent?
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What is the primary benefit of using both collaboration and sequence diagrams?
What is the primary benefit of using both collaboration and sequence diagrams?
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What do messages between objects convey in a collaboration diagram?
What do messages between objects convey in a collaboration diagram?
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What is the primary role of an actor in a collaboration diagram?
What is the primary role of an actor in a collaboration diagram?
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What is the primary focus of a collaboration diagram?
What is the primary focus of a collaboration diagram?
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What is the primary benefit of using collaboration diagrams in system modeling?
What is the primary benefit of using collaboration diagrams in system modeling?
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What is the primary purpose of a link in a collaboration diagram?
What is the primary purpose of a link in a collaboration diagram?
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What is the primary difference between the role of actors in collaboration and sequence diagrams?
What is the primary difference between the role of actors in collaboration and sequence diagrams?
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What is the primary purpose of UML interaction diagrams in software construction?
What is the primary purpose of UML interaction diagrams in software construction?
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What type of scenarios can sequence diagrams help to predict in system modeling?
What type of scenarios can sequence diagrams help to predict in system modeling?
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What is the primary focus of a sequence diagram in UML interaction diagrams?
What is the primary focus of a sequence diagram in UML interaction diagrams?
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What is represented by an actor in a sequence diagram?
What is represented by an actor in a sequence diagram?
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What is the primary benefit of using sequence diagrams in system modeling?
What is the primary benefit of using sequence diagrams in system modeling?
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What type of diagrams do UML interaction diagrams consist of?
What type of diagrams do UML interaction diagrams consist of?
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What is the primary role of an actor in a sequence diagram?
What is the primary role of an actor in a sequence diagram?
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What is the purpose of a sequence diagram in system modeling?
What is the purpose of a sequence diagram in system modeling?
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What type of information can be captured by a sequence diagram?
What type of information can be captured by a sequence diagram?
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What is the primary purpose of sequence diagrams in UML interaction diagrams?
What is the primary purpose of sequence diagrams in UML interaction diagrams?
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What is the primary function of objects in a collaboration diagram?
What is the primary function of objects in a collaboration diagram?
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What is the main purpose of identifying behavior in creating a collaboration diagram?
What is the main purpose of identifying behavior in creating a collaboration diagram?
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What is the relationship between objects and subsystems in a collaboration diagram?
What is the relationship between objects and subsystems in a collaboration diagram?
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What is the purpose of drawing instance level collaboration diagrams?
What is the purpose of drawing instance level collaboration diagrams?
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What is the role of links in a collaboration diagram?
What is the role of links in a collaboration diagram?
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What is the main difference between a collaboration diagram and a sequence diagram?
What is the main difference between a collaboration diagram and a sequence diagram?
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What is the primary benefit of using collaboration diagrams in system modeling?
What is the primary benefit of using collaboration diagrams in system modeling?
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What is the purpose of specifying the context of interaction in a collaboration diagram?
What is the purpose of specifying the context of interaction in a collaboration diagram?
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What is the primary focus of a collaboration diagram?
What is the primary focus of a collaboration diagram?
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What is the relationship between objects and actors in a collaboration diagram?
What is the relationship between objects and actors in a collaboration diagram?
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Study Notes
Interaction Diagrams
- Interaction diagrams represent interaction (communication, collaboration) between objects/classes and visualize the dynamic aspect of a system.
- UML interaction diagrams consist of sequence diagrams and communication diagrams.
Sequence Diagrams
- Sequence diagrams describe interactions among classes/objects in terms of an exchange of messages over time.
- They are also called event diagrams and are useful for visualizing and validating various runtime scenarios.
- Sequence diagrams capture:
- Interaction that takes place in a collaboration that either realizes a use case or an operation.
- High-level interactions between users of the system and the system, between the system and other systems, or between subsystems.
Sequence Diagram Notations
- Actor: represents a type of role played by an entity that interacts with the subject.
- Lifeline: represents an individual participant in the Interaction.
- Activation: a thin rectangle on a lifeline represents the period during which an element is performing an operation.
- Call Message: represents an invocation of operation of target lifeline.
- Return Message: represents the pass of information back to the caller of a corresponded former message.
- Self Message: represents the invocation of message of the same lifeline.
- Recursive Message: represents the invocation of message of the same lifeline, with the target pointing to an activation on top of the activation where the message was invoked from.
- Create Message: represents the instantiation of (target) lifeline.
- Destroy Message: represents the request of destroying the lifecycle of target lifeline.
- Duration Message: shows the distance between two time instants for a message invocation.
- Note: gives the ability to attach various remarks to elements, carrying no semantic force but containing useful information for a modeler.
Collaboration Diagrams
- Collaboration diagrams, also known as communication diagrams, illustrate the relationships and interactions among software objects.
- A collaboration is a collection of named objects and actors with links connecting them, which collaborate in performing some task.
- Collaboration diagrams show:
- Roles, functionality, and behavior of individual objects.
- Overall operation of the system in real-time.
Steps for Creating Collaboration Diagrams
- Identify behavior whose realization and implementation is specified.
- Identify structural elements (class roles, objects, subsystems) necessary to carry out the functionality of the collaboration.
- Decide on the context of interaction: system, subsystem, use case, and operation.
- Model structural relationships between elements to produce a diagram showing the context of the interaction.
- Consider alternative scenarios that may be required.
- Draw instance-level collaboration diagrams, if required.
- Optionally draw a specification-level collaboration diagram to summarize alternative scenarios in instance-level sequence diagrams.
Collaboration Diagram Example
- A collaboration diagram illustrates the relationships and interactions among software objects.
Collaboration Diagram Notations
- Objects: shown as rectangles with naming labels inside (object name: class name).
- Actors: instances that invoke the interaction in the diagram, with a name and a role.
- Links: connect objects with actors, depicted as solid lines between two elements.
- Messages between objects: shown as labeled arrows placed near a link, conveying information about the activity and including sequence numbers.
Interaction Diagrams
- Interaction diagrams represent interaction (communication, collaboration) between objects/classes and visualize the dynamic aspect of a system.
- UML interaction diagrams consist of sequence diagrams and communication diagrams.
Sequence Diagrams
- Sequence diagrams describe interactions among classes/objects in terms of an exchange of messages over time.
- They are also called event diagrams and are useful for visualizing and validating various runtime scenarios.
- Sequence diagrams capture:
- Interaction that takes place in a collaboration that either realizes a use case or an operation.
- High-level interactions between users of the system and the system, between the system and other systems, or between subsystems.
Sequence Diagram Notations
- Actor: represents a type of role played by an entity that interacts with the subject.
- Lifeline: represents an individual participant in the Interaction.
- Activation: a thin rectangle on a lifeline represents the period during which an element is performing an operation.
- Call Message: represents an invocation of operation of target lifeline.
- Return Message: represents the pass of information back to the caller of a corresponded former message.
- Self Message: represents the invocation of message of the same lifeline.
- Recursive Message: represents the invocation of message of the same lifeline, with the target pointing to an activation on top of the activation where the message was invoked from.
- Create Message: represents the instantiation of (target) lifeline.
- Destroy Message: represents the request of destroying the lifecycle of target lifeline.
- Duration Message: shows the distance between two time instants for a message invocation.
- Note: gives the ability to attach various remarks to elements, carrying no semantic force but containing useful information for a modeler.
Collaboration Diagrams
- Collaboration diagrams, also known as communication diagrams, illustrate the relationships and interactions among software objects.
- A collaboration is a collection of named objects and actors with links connecting them, which collaborate in performing some task.
- Collaboration diagrams show:
- Roles, functionality, and behavior of individual objects.
- Overall operation of the system in real-time.
Steps for Creating Collaboration Diagrams
- Identify behavior whose realization and implementation is specified.
- Identify structural elements (class roles, objects, subsystems) necessary to carry out the functionality of the collaboration.
- Decide on the context of interaction: system, subsystem, use case, and operation.
- Model structural relationships between elements to produce a diagram showing the context of the interaction.
- Consider alternative scenarios that may be required.
- Draw instance-level collaboration diagrams, if required.
- Optionally draw a specification-level collaboration diagram to summarize alternative scenarios in instance-level sequence diagrams.
Collaboration Diagram Example
- A collaboration diagram illustrates the relationships and interactions among software objects.
Collaboration Diagram Notations
- Objects: shown as rectangles with naming labels inside (object name: class name).
- Actors: instances that invoke the interaction in the diagram, with a name and a role.
- Links: connect objects with actors, depicted as solid lines between two elements.
- Messages between objects: shown as labeled arrows placed near a link, conveying information about the activity and including sequence numbers.
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Description
Learn about interaction diagrams, sequence diagrams, and collaboration diagrams in software construction. Understand the objectives of UML interaction diagrams and how they are used to visualize dynamic systems.
