Visual Modeling That Stays Out of Your Way
A schema visualizer with smart defaults, drag-and-drop relationships, and a visual editor that gets out of your way - so you spend time understanding the schema, not fighting the tool.
Rapid Prototyping
Sketch your schema in seconds. Go from concept to concrete entities before the idea fades.
Smart Relationships
Create 1:N, 1:1, or N:N relationships with simple drag-and-drop. Auto junction table generation, auto FK naming - no manual wiring needed.
Flexible Relationship Lines
Arrange your ERD the way you think about it, not the way the layout forces you. Lines adapt and reroute automatically, turn with rounded corners, and hop over each other where they cross. Add ERD custom waypoints for full control.
Check Constraints as Documentation
Full check constraint support - write any expression you need. For IN constraints, Schemity extracts the allowed values into a selectable dropdown for default values - self-documenting and enforceable in one step.
Custom Entity Colors
Group related entities visually. Color-code entity groups and their relationship lines for instant clarity on large schemas.
Clear Unique Together
Instantly distinguish between single-field unique constraints and ERD composite unique constraints at a glance.
Tabs as Systems
Use tabs to separate the systems you work on - one product, one tab. Quick number-key navigation keeps you focused as you move between domains.
Schemas as Structure
Model across PostgreSQL schemas - not just the public schema. Use them to express domains and structural boundaries inside a single database.