Linked Data Explorer

Introduction

A React-based SPARQL visualization and query tool for exploring Dutch Government Data (Regels Overheid), with specialized support for DMN (Decision Model and Notation) orchestration.

Live Application: linkeddata.open-regels.nl

Key Features

SPARQL Query Editor

• Syntax highlighting and query execution
• Sample query library
• Multiple endpoint support
• Interactive graph visualization

DMN Discovery

• Automatic discovery from TriplyDB
• Search and filter capabilities
• Variable inspection (inputs/outputs)
• Chain detection based on variable matching

Chain Building

• Drag-and-drop interface
• Smart validation
• Variable orchestration
• Template system
• Export as JSON or BPMN 2.0

Quick Links

• Features Overview
• Getting Started Guide
• API Reference

Architecture

graph TB
    A[Frontend<br/>React + TypeScript] -->|HTTPS/REST| B[Backend<br/>Node.js + Express]
    B -->|SPARQL| C[TriplyDB]
    B -->|REST API| D[Operaton<br/>DMN Engine]

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Backend Integration

The Linked Data Explorer shares a backend with CPSV Editor. See Shared Backend documentation.