Goals and Scenarios
Goal 1. The tricycle must be safe
- Scenario 1: The 3 years old child must be able to operate the tricycle safely, using appropriate tools such as safety helmet.
Goal 2. The tricycle must be manual
- Scenario 1: The 3-years old child must be able to operate the tricycle manually by himself.
- Scenario 2: The 3-years old child must be able to operate the tricycle efficiently.
Goal 3. The tricycle must be economic
- Scenario 1: The tricycle must be at good price
- Scenario 2: The tricycle must be easily maintained
Actors
- 3-years old child: The person who will operate the tricycle
- Tricycle: The machine that the child will operate
- Parents: Watching for the child and ensuring his/her safety.
Users:
User 1: 3-years old child
Requirements:
- Safely operates the tricycle.
System boundaries:
The system boundary of the tricycle is the tricycle itself that interface with the 3-years old child. The child may operate the tricycle inside home, in the yard or in a park.
Baseline (Textual) Initial Use Cases and Activity Diagrams
In this section base line use case(s) are described and activity diagram are presented to make-up the initial use cases.
Use Case 1: Child Operates the Tricycle
Description: The child rides the tricycle
Primary Actors: The child, The Tricycle, and The Parents
Pre-conditions: The child wants to ride the tricycle
Flow of Events:
- The child goes to the bicycle
- The child may or may not gets parents help
- The child wears safety helmet
- The child gets on, operates and play with the tricycle
- The child finishes playing
- The child may or may not gets parents help
- The child gets off the tricycle
- Stores the tricycle in place.
Activity Diagram: TBD (After getting a copy of VISIO CD)