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Getting Started

Welcome to Universal Ontology Definition (UOD)! This section will help you understand what UOD is and how to use it in your projects.

What is UOD?

UOD is an open, standardized four-layer enterprise ontology framework designed to provide a unified conceptual modeling foundation for:

  • 🧠 Knowledge Graphs — Build enterprise knowledge graphs with standardized concepts
  • 📊 Semantic Layers — Create consistent data semantic layers across systems
  • 🗄 Master Data Management — Standardize entity definitions across the organization
  • 🤖 AI Agent Knowledge Bases — Provide structured domain knowledge to AI agents

How It Works

graph TB
    L3["🏢 L3: Enterprise Layer<br/>Your Company's Custom Extensions"]
    L2["🏭 L2: Industry and Domain Extension<br/>Consulting, Luxury, Finance..."]
    L1["🌐 L1: Universal Core<br/>24 Classes · 12 Relations"]
    L0["⚙️ L0: Platform Bindings<br/>OWL/RDF · JSON-LD · GraphQL · SQL"]

    L3 -->|extends| L2
    L2 -->|extends| L1
    L1 -->|serialized by| L0

    style L3 fill:#e1bee7,stroke:#9c27b0
    style L2 fill:#bbdefb,stroke:#1976d2
    style L1 fill:#c8e6c9,stroke:#388e3c
    style L0 fill:#fff9c4,stroke:#f9a825

Next Steps