SQL Schema Builder
Draft SQL tables, seed rows, and test queries against a temporary local SQLite database before copying the schema elsewhere.
Cmd/Ctrl Enter
Result table
Run a query to see rows here.
Run a query to see the result table.
Schema and sample dataUsers, posts, and a JOIN query.
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Questions
Can this design a database schema visually?
The first version is text-first: edit CREATE TABLE statements, seed rows, and validate the schema by running queries locally.
Can I test foreign keys?
Yes. Use the preset schemas or write your own FOREIGN KEY definitions, then test related queries in the same workspace.
Should I use this output directly in production?
Use it as a local draft and learning workspace. Review database-specific syntax, indexes, migrations, and constraints before production use.
Does Utilumo upload my input?
No. This tool is designed for local browser processing and does not send your input to a server.
Do I need an account?
No. Utilumo tools are built to work without accounts or sign-in.