RTGM Use Case Diagram: Read And Understand The Case Study

RTGM Use Case Diagram (a) Read and understand the case study on

Analyze the Sandia Medical Devices case study related to the development of an Android app, identify all actors involved in using RTGM, develop a list of use cases based on user goals, draw use case diagrams for these use cases, and apply event decomposition techniques to identify events, event types, and corresponding use cases. Construct the diagrams using Visio and include them in the final document, which should be a comprehensive submission including all derived artifacts and descriptions.

Paper For Above instruction

The development of a comprehensive use case diagram for the RTGM (Real-Time Global Monitoring) system in the context of Sandia Medical Devices requires a systematic analysis of involved actors, their goals, and the events that trigger system interactions. This process begins with a thorough understanding of the case study detailed on pages 67-68 of Chapter 2, titled "Sandia Medical Devices." The case study introduces the RTGM application, which is intended to enhance the monitoring and management of medical devices through a mobile platform, specifically an Android application. As the lead systems analyst, the first step involves identifying all stakeholders and users who interact with the system, which forms the foundation for subsequent use case development and diagramming.

Identification of Actors

Actors in a use case diagram represent entities that interact with the system, either directly or indirectly, to achieve specific goals. In the RTGM scenario, actors include both human users and external systems. Based on the case study, the primary actors encompass:

  • Medical Device Technician: Responsible for operating and maintaining medical devices, monitoring their status, and receiving alerts.
  • Healthcare Provider: Uses the system to review device performance data and patient-related information.
  • System Administrator: Manages user accounts, system configurations, and maintains system security.
  • Supply Chain Manager: Monitors inventory levels of parts and supplies related to medical devices.
  • External Monitoring System: Interfaces with the RTGM system to exchange data or receive alerts, representing integration with external systems.

These actors serve as the human and system entities that initiate, process, or receive information via the RTGM application.

Developing Use Cases Using User Goal Technique

Once actors are identified, the next step involves articulating their specific goals within the system, which translate into use cases. Applying the user goal technique, the following list of use cases emerges:

  • Monitor Device Status: Technician and healthcare provider check real-time device health data.
  • Receive Alerts: Technician and healthcare provider receive notifications about device malfunctions or maintenance needs.
  • Perform Device Maintenance: Technician initiates repair or calibration procedures.
  • Update Device Configuration: System administrator adjusts system or device settings.
  • Manage User Accounts: System administrator creates, updates, or deactivates user profiles.
  • Generate Reports: Healthcare provider or manager generate performance and maintenance reports.
  • Order Replacement Parts: Supply chain manager initiates ordering processes for device parts.
  • Interface with External Monitoring System: External system exchanges data with RTGM to synchronize device statuses.

These use cases encapsulate the primary goals users aim to accomplish using RTGM, forming the basis for diagramming.

Drawing the Use Case Diagram

Using diagramming tools such as Microsoft Visio, the actors are represented as stick figures linked to their respective use cases with lines. The use cases are represented as ovals. The diagram visually depicts how each actor interacts with various functionalities of the RTGM system, highlighting shared use cases like monitoring device status and receiving alerts, as well as actor-specific tasks like managing user accounts or ordering parts.

Event Decomposition Technique Application

Event decomposition dissects system interactions into discrete events, clarifying the system's response to stimuli. For each identified event, the process involves naming the event, determining its type (external, temporal, or internal), and associating it with the relevant use case. For example:

  • Event Name: Device Malfunction Detected
  • Event Type: External Event
  • Associated Use Case: Receive Alerts

Similarly, a device status check might involve:

  • Event Name: User Requests Device Status
  • Event Type: External Event
  • Associated Use Case: Monitor Device Status

This process is repeated for all critical events, resulting in a set of event-initiated use cases and corresponding diagrams that demonstrate system responses to various stimuli.

Constructing and Integrating Diagrams

The two diagrams—one from actor goals and another from event decomposition—are constructed in Visio and then incorporated into the final document. This visual supplementation supports stakeholders and developers in understanding system interactions comprehensively.

Conclusion

The systematic approach to developing use case diagrams for RTGM in the Sandia Medical Devices context emphasizes thorough actor analysis, precise use case development, and detailed event decomposition. These artifacts facilitate effective system design, ensuring functional completeness and clarity of user interactions, which ultimately support the system's goal of enhancing medical device management and patient safety.

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