Openlearnia

Database Lab

Visual schema builder with integrated PGLite.

Design tables, columns, and relations on a canvas, apply DDL to an in-browser Postgres (PGLite), then run SQL queries and browse data. Combines the former Schema Builder and PGLite Playground.

Platform: Browser

Live app: https://schema-builder.openlearnia.com

Source: https://github.com/openlearnia/schema-builder

Open app GitHub

Features

Visual table/column editor with relation edges
Canonical SchemaIR with deterministic SQL generation
Integrated PGLite — apply schema, run SQL, browse data
Local autosave, revision history, and IndexedDB persistence