Comprehensive Tutorial: Using the AI Use Case Scenario Analyzer for Decision Table Generation

Introduction

Understanding and documenting is a critical step in software development. Use cases help define system requirements, but manually analyzing all possible scenarios—main flows, alternative paths, and edge cases—can be error-prone and time-consuming.

The Use Case Scenario Analyzer is a free AI-powered tool designed to automate this process. It transforms use case descriptions into structured Decision Tables, ensuring clarity, completeness, and unambiguous system behavior.

Key Concepts

1. Use Cases

A use case describes how a user interacts with a system to achieve a specific goal. It includes:

  • Main Success Scenario: The ideal path where everything works as expected.
  • Alternative Flows: Variations from the main path (e.g., user cancels an action).
  • Exception Paths: Error conditions or unexpected events (e.g., network failure).

2. Decision Tables

A Decision Table is a structured way to represent complex logic. It maps conditions (inputs or states) to actions (system responses). Decision Tables are useful for:

  • Clarifying business rules.
  • Ensuring all scenarios are covered.
  • Improving communication between stakeholders.

Why Use the Use Case Scenario Analyzer?

  • Automated Scenario Identification: The AI analyzes your use case description and identifies all relevant scenarios.
  • Automatic Decision Table Generation: The tool constructs a Decision Table, mapping conditions to actions.
  • Comprehensive Logic Coverage: Ensures no scenario is overlooked, reducing the risk of bugs.
  • Improved Clarity: Decision Tables make complex logic easier to understand for both technical and non-technical teams.

Step-by-Step Tutorial

Step 1: Access the Tool

Step 2: Describe Your Use Case

  • Provide a clear description of your use case, including:
    • The main success scenario.
    • Any known alternative flows or exception paths.
  • Example:

    ““ Main Flow: User selects an item, proceeds to checkout, enters payment details, and confirms the transaction. Alternative Flow: User cancels the transaction before confirmation. Exception Path: Payment gateway times out.

Step 3: Click “Analyze”

  • The AI processes your description and identifies all relevant scenarios.

Step 4: Review the Decision Table

  • The tool generates a Decision Table with:
    • Conditions: Inputs or states (e.g., “Payment Confirmed,” “Network Available”).
    • Actions: System responses (e.g., “Process Payment,” “Display Error Message”).
Example Decision Table for Online Payment Processing
Condition 1 (Payment Confirmed) Condition 2 (Network Available) Action 1 (Process Payment) Action 2 (Display Error)
Yes Yes Yes No
Yes No No Yes
No Yes No Yes

Step 5: Refine Your Design

  • Use the Decision Table to:
    • Validate system logic.
    • Identify missing requirements.
    • Ensure robustness in your design.|
      Development plan generated with AI

Example: Use Case Analysis

  • Main Flow: User enters credentials, system authenticates, and grants access.
  • Alternative Flow: User forgets password and requests a reset.
  • Exception Path: System detects multiple failed login attempts and locks the account.

Decision Table Output

Decision Table for User Login System
Condition 1 (Valid Credentials) Condition 2 (Failed Attempts > 3) Action 1 (Grant Access) Action 2 (Lock Account) Action 3 (Send Reset Link)
Yes No Yes No No
No Yes No Yes No
No No No No Yes

Summary

  • Use Case Scenario Analyzer .
  • It generates Decision Tables to clarify system behavior.
  • The tool ensures and improves communication among stakeholders.
  • Accessible for both Visual Paradigm Online and Desktop users.

Next Steps

  • Try the tool with your own use cases.
  • Use the generated Decision Tables to .
  • Share the for better collaboration.

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