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PostgreSQL Visualizer
Relational model, query planner, MVCC transactions, and index internals — all visualized
Relational Model
Data is organized in tables with a fixed schema. Each row is a record, each column is a typed attribute.
users
| id | name | role | |
|---|---|---|---|
| 1 | Alice Chen | alice@dev.io | admin |
| 2 | Bob Smith | bob@dev.io | user |
| 3 | Carol Li | carol@dev.io | user |
orders
| id | user_id | product | total |
|---|---|---|---|
| 101 | 1 | Pro Plan | $29.00 |
| 102 | 2 | Starter | $9.00 |
| 103 | 1 | Add-on | $5.00 |
user_id in orders references id in users — this is a foreign key