Invoice Subsystem - Very Good Building & Development Company (VGB)

Overview

This document provides the technical design for the Invoice Subsystem of Very Good Building & Development Company (VGB), Ron Swanson's company. VGB is a construction company involved in various aspects of the industry, including:

• General contracting
• Subcontracting
• Sales
• Leasing and rental of construction equipment and materials

Currently, the company relies on spreadsheets and physical records, highlighting the need for modernization through a database-backed system.

System Design

The Invoice Subsystem is designed as an object-oriented application written in Java. It integrates:

• Data representation using structured models
• Electronic Data Interchange (EDI) using JSON and XML formats for interoperability with other business systems

Technical Specifications

This document outlines the following key aspects required for implementing the Invoice Subsystem:

• Data Models: Defining structured representations of invoices and related entities
• System Architecture: Object-oriented design principles with a database-backed infrastructure
• Technical Implementation: Details on database integration, API design, and data exchange formats

Future Enhancements

As the system evolves, future improvements may include:

• Enhanced reporting and analytics
• Integration with cloud-based services
• Role-based access control for improved security

---

© 2025 Very Good Building & Development Company (VGB). All rights reserved.