Enhanced ER Diagram Generator
Create Enhanced Entity Relationship Diagrams with specialization, generalization, and inheritance. Describe your database hierarchy and let AI handle the notation.
What is an Enhanced ER Diagram?
An Enhanced ER Diagram (EER) extends standard ER diagrams with inheritance concepts. Use EER when your database has "is-a" relationships—like Employee → Manager, or Vehicle → Car, Truck, Motorcycle.
Standard ERD handles entities and relationships. Enhanced ERD adds specialization (breaking entities into subtypes), generalization (grouping entities under a parent type), and inheritance (subtypes inherit parent attributes).
When to Use Enhanced ERDs
Choose the right diagram type for your database design needs:
Choose Enhanced ERD for:
- Employee/user role hierarchies
- Product category trees
- Any "is-a" relationship in your data
- Academic database design projects
- Object-relational database modeling
Stick with standard ER diagrams for:
- Simple CRUD apps
- Flat data without inheritance
- Quick prototypes
Common Enhanced ERD Scenarios
HR & Employee Systems
Model employees specializing into managers, developers, analysts—each with unique attributes but sharing common employee data.
E-commerce Product Hierarchies
Products categorize into electronics, clothing, furniture—each with category-specific attributes.
Academic Systems
University databases where Person generalizes Student and Professor, with overlapping membership possible.
Create Your Enhanced ER Diagram
Describe your database hierarchy in plain English. Our AI generates proper EER notation with specialization symbols and inheritance relationships.
Need a simpler diagram? Try our standard ER Diagram Generator. ER Diagrams — Standard entity relationship diagrams
FAQ
Related Database Diagram Tools
Explore other database design tools: