Back to Systems
ENTERPRISE ARCHITECTURE · JAVA · UNIFIED UML MODELING · RBAC·2023 - 2025

Julie's POS System (Enterprise Extension)

JavaMySQLSystems AnalysisUMLRBAC
View Repository

Led an engineering team of 5 over multiple academic terms to architect a commercial-grade retail POS system with rigorous enterprise design methodologies.

01. The Problem

Retail franchise operations suffer inventory discrepancies and reconciliation bottlenecks when relying on disparate point solutions without unified role boundaries.

02. Architecture & Solution

Architected Java desktop enterprise system with atomic transaction handling, real-time SKU deductions, automated receipt generation, and exhaustive UML class and sequence diagrams mapping every business event.

Key Architectural Highlights

  • ▹Role-based access control (Admin, Cashier, Store Manager) with audit logging
  • ▹Atomic SQL transaction rollbacks preventing partial checkout corruptions
  • ▹Full SDLC lifecycle artifacts spanning UML Use Case, Class, Sequence, and State diagrams

03. Impact

Handled 500+ daily mock transaction bursts with zero downtime, cutting simulated operational auditing overhead by 40%.

Elgen Mar Arinasa © 2026

Let's Discuss This Project →