Can I design schemas for any database?

Yes. ER diagrams are compatible with PostgreSQL, MySQL, SQL Server, Oracle, MariaDB, and other relational systems.

How do I show composite primary keys?

Mention all fields that make up the composite key, and AI will annotate them together.

Can I add unique or not-null constraints?

Yes. Include constraints in your description and they will be reflected in the diagram.

How do I represent self-referencing tables?

Describe the relationship and AI will generate a recursive reference visualization.

Can I include views or stored procedures?

ER diagrams focus on tables, but you can describe views or SP logic and generate separate diagrams.

Database Schema Design

Technical

Create Database ER Diagrams with AI

Explain your schema—tables, columns, PK/FK relationships, data types—and AI instantly generates a structured Entity-Relationship diagram for database design and documentation.

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Try Relational Database Design

Générez votre diagramme immédiatement. Décrivez ce dont vous avez besoin.

Type de diagramme

Description du diagramme

Exemples rapides :

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Current selected: Entity Relationship Diagram

Choisissez un type et entrez une description

Design Databases in 3 Steps

From conceptual schema to ER diagram

Describe Your Tables

List all tables, columns, primary keys, foreign keys, and relationship rules.

AI Creates ER Diagram

AI generates a normalized schema diagram with crow’s-foot notation and clear table relationships.

Optimize & Implement

Use the ER diagram to check normalization, plan indexes, and guide implementation or migration steps.

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Complete Database Design Suite

Plan, validate, and document your data model

Normalization Support: AI helps you identify redundancy and structure your schema according to 1NF, 2NF, and 3NF best practices.
Cardinality Notation: Proper one-to-one, one-to-many, and many-to-many relationships using standard crow’s-foot notation.
Primary & Foreign Keys: Clear PK/FK markers help you understand how tables connect and enforce referential integrity.
Data Type Specification: Document column data types, lengths, precision, and constraints.

Database Design FAQs

Can I design schemas for any database?: Yes. ER diagrams are compatible with PostgreSQL, MySQL, SQL Server, Oracle, MariaDB, and other relational systems.
How do I show composite primary keys?: Mention all fields that make up the composite key, and AI will annotate them together.
Can I add unique or not-null constraints?: Yes. Include constraints in your description and they will be reflected in the diagram.
How do I represent self-referencing tables?: Describe the relationship and AI will generate a recursive reference visualization.
Can I include views or stored procedures?: ER diagrams focus on tables, but you can describe views or SP logic and generate separate diagrams.