Podcast
Questions and Answers
What is the purpose of a message-name in UML format?
What is the purpose of a message-name in UML format?
- It denotes the service requested, written as a verb-noun. (correct)
- It identifies the system's operational capacity in response to events.
- It indicates the type of external actor interacting with the system.
- It describes the data being returned from the destination object.
What does an asterisk (*) indicate in message notation for SSD?
What does an asterisk (*) indicate in message notation for SSD?
- The message is optional and may not be sent.
- The message is sent in a repeating or looping manner. (correct)
- The message is conditional based on parameters.
- The message has no parameters to pass.
How are parameters listed in a UML message format?
How are parameters listed in a UML message format?
- Parameters are separated by commas within parentheses. (correct)
- Parameters are separated by semicolons.
- Parameters are grouped without any separators.
- Parameters use spaces to separate each entry.
In system operations, how are they typically triggered?
In system operations, how are they typically triggered?
What is indicated by brackets [] in message notation?
What is indicated by brackets [] in message notation?
What does the term 'return-value' represent in SSD message notation?
What does the term 'return-value' represent in SSD message notation?
Which of the following is NOT a type of diagram used in extending and integrating requirements models?
Which of the following is NOT a type of diagram used in extending and integrating requirements models?
When a use case is realized, what type of diagram is typically used?
When a use case is realized, what type of diagram is typically used?
Flashcards
Message Format (SSD)
Message Format (SSD)
Message format in System Sequence Diagrams (SSD) uses a message name, parameter list, and return value (if applicable).
Message Name (SSD)
Message Name (SSD)
Description of a requested service (verb-noun format).
Parameter List (SSD)
Parameter List (SSD)
Data passed with an outgoing message; uses commas to separate values.
Return Value (SSD)
Return Value (SSD)
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Conditional message (SSD)
Conditional message (SSD)
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System Operation
System Operation
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System Event
System Event
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Use Case
Use Case
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Study Notes
Message Formats in SSD
- Messages in SSD consist of a message name followed by parameters (in parentheses)
- Names begin with a lowercase letter
- No spaces in names; use uppercase letters to separate words
- Names in parameters are separated by commas
- Empty parentheses () are used if no parameters
Outgoing Messages (System Outputs)
- System outputs are responses to complete an event
- Messages from the system to another system require action and a reply
- Every output is derived from input and stored data
Message Notation for SSD
[true/false condition] return-value := message-name (parameter-list)*indicates repeating or looping messages[]indicates a true/false condition (only tests the message)- Message name is verb-noun describing a service
- Parameter list (in/without parentheses) shows data passed with the message
- Return value (like
:) describes data returned to the original sender
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