Base Use Case Diagram Example: Loan Application

Follow this guide to see how to turn a PlantUML diagram for a Loan Application Process into a full set of project artifacts.

1. Provide the Use Case Description

Paste the PlantUML code into the editor. Check the live preview showing the Applicant submitting Apply for Loan, including Check Credit Score and optionally extending to Approve Collateral. Focus on this use case; refine complex diagrams with the companion app. Click “Generate Report” when ready.

@startuml
actor Applicant
actor Loan Officer
Applicant --> (Apply for Loan) : submits
(Apply for Loan) ..> (Check Credit Score) : <<include>>
(Apply for Loan) ..> (Approve Collateral) : <<extend>>
@enduml

2. Generate the AI Report

The AI evaluates actors (Applicant, Loan Officer) and relationships (includes, extends). The report summarizes the loan process, lists actors, details flows (preconditions, post-conditions, alternatives, exceptions like low credit), and covers sub-use cases. Export as Markdown for collaboration.

3. Generate Scenarios

Click “Generate Scenarios” to create narratives like Standard Loan Application or Application with Collateral. These support user stories and stakeholder alignment.

4. Generate Test Cases

Click “Generate Test Cases” to produce tests with ID, description, preconditions, steps, and expected results. These integrate with QA tools for thorough loan testing.