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Design PostgreSQL tables, connect Primary and Foreign Keys with directional arrows, generate zero-drift SQL migrations, and link database deliverables straight to sprint boards and verified timers.

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Live Interactive Schema Canvas

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Click any table, hover relationship arrows, and inspect the real-time SQL DDL generated below.

TimeDodo/Architecture/Schema Designer (production_db)
PostgreSQL 16 · In Sync
PostgreSQL Schema Canvas: production_db 4 Tables Linked5 FK Constraints

Relational schema topology — Primary keys (PK) connect to Foreign keys (FK) with cascade integrity.

PK FK
users
4.2kroot
PKid
uuid
email
varchar(255)
name
varchar(100)
role
user_role
projects
382active
PKid
uuid
FKowner_id
→ users.id
name
varchar(100)
status
project_status
billable_hours
28.9kledger
PKid
uuid
FKtask_id
→ tasks.id
FKuser_id
→ users.id
seconds
integer
rate
numeric(10,2)
tasks
12.4ksprint
PKid
uuid
FKproject_id
→ projects.id
FKassignee_id
→ users.id
title
text
stage
task_stage
Schema Inspector· Active Table:
Cascade Constraints Active
Primary Key
tasks.idUUID

Globally unique primary key indexed via B-Tree.

Foreign Key Dependencies
• project_id → projects.id
• assignee_id → users.id

Foreign keys enforce strict referential integrity.

Zero Drift Sync
Auto-Generated Migration

Changes update PostgreSQL migrations and TypeScript ORM types automatically.

migration_20260722_schema.sql
CREATE TABLE tasks (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  project_id UUID NOT NULL REFERENCES projects(id) ON DELETE CASCADE,
  assignee_id UUID REFERENCES users(id) ON DELETE SET NULL,
  title TEXT NOT NULL,
  stage VARCHAR(50) DEFAULT 'pending'
);
CREATE INDEX idx_tasks_project_id ON tasks(project_id);
CREATE INDEX idx_tasks_assignee_id ON tasks(assignee_id);
Zero Drift Architecture: Any modifications to the database schema stay synchronized with your sprint board tasks and invoice calculations.

Visual schemas designed where engineering happens.

Relational ER Canvas

Design tables in a clean multi-row, multi-column topology with intuitive visual hierarchy and zero clutter.

Explicit PK & FK Arrows

Visual connector arrows route directly from Primary Keys to Foreign Keys, showing referential flow and cardinality.

Instant SQL Migrations

Generate verified PostgreSQL, MySQL, and SQLite DDL with index declarations and cascade safety constraints in one click.

Zero Drift Architecture

Schema definitions stay strictly synchronized with sprint board tickets, PR commits, and itemized time billing.

Cascade & Constraint Safety

Inspect referential integrity rules, foreign key actions (CASCADE, SET NULL), and B-Tree indexes before deployment.

Sprint Ticket Integration

Link database tables directly to Kanban tasks, track migration hours, and attach schema diffs to sprint reviews.

DB Designer FAQ

Design schemas where the engineering happens.

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