ER Builder

Advanced Database Design Tool

Entities
Strong Entity
📦
Weak Entity
🔷
Associative Entity
🏷️ Attributes
Simple
Composite
Derived
Multi-valued
🔑
Key Attribute
🔗 Relationships
Relationship
◊◇
Weak Relationship
⚙️ Controls
100%
Ready - Drag elements to canvas to start building your ER diagram Elements: 0

📝 Element Properties

Select an element to edit its properties

Welcome to Advanced ER Builder Pro!

🎯

Getting Started

Welcome! This tutorial will guide you through creating professional ER diagrams. Let's start with the basics!

  • Drag elements from the toolbox to the canvas
  • Create entities, attributes, and relationships
  • Connect elements by dragging from one to another
🖱️

Right-Click for Properties

Here's a key feature! Right-click on any connection line (arrow) to edit its properties:

  • Set cardinality (1:1, 1:N, M:N)
  • Add participation constraints
  • Modify relationship attributes
  • Change connection style
💡 Try it: Create a connection, then right-click on it!

Advanced Features

Explore these powerful features:

  • Zoom & Pan: Mouse wheel to zoom, drag to pan
  • Export: Save as PNG or generate SQL schema
  • Undo/Redo: Use buttons or Ctrl+Z/Ctrl+Y
  • Element Types: Normal/weak entities, various attributes

Pro Tips

Master these shortcuts for efficient diagramming:

  • Hold Shift while dragging for precise alignment
  • Double-click elements to edit text directly
  • Use connection mode for faster linking
  • Right-click canvas for context menu
🚀 You're ready to create professional ER diagrams!
⚙️ Edit Properties
🔢 Set Cardinality
🏷️ Add Label
🗑️ Delete Connection

📱 Mobile Guide

🎯 Adding Elements

1. Tap a tool in the toolbar to select it
2. Tap anywhere on the canvas to place it
3. Double-tap for quick placement

✋ Moving Elements

• Touch and drag any element to move it
• Connections update automatically

🔗 Connecting Elements

• Use the "Connect" button for easier connections
• Tap first element, then tap second element
• Long press connections to edit properties

🔍 Navigation

• Pinch to zoom in/out
• Use two fingers to pan around
• Tap ☰ to toggle toolbar

🔗 Connection Mode: Tap elements to connect