rdbms-playground is a cross-platform terminal app for learning relational database concepts - tables, columns, primary and foreign keys, relationships, indexes, queries, and query plans - in a safe sandbox. It's a teaching tool, not a database administration tool: it meets beginners with guided, keyword-based commands (simple mode) and grows with them to raw SQL (advanced mode), so the same playground works from "what is a primary key?" through to writing real queries and reading their execution plans.
Yes. RDBMS Playground is free and open-source software released under the MIT OR Apache-2.0 license.
What is the latest version of RDBMS Playground?
The latest version is 0.2.0, released on Jun 17, 2026.
Is it safe to download RDBMS Playground?
The download button links to the official installer published on git.lazyeval.net, the same file Windows Package Manager installs. You can verify the downloaded file by comparing its SHA-256 checksum with 0226a9d27699ef175821e7c1a81b46108adced60eccef670b5206675328ec4d1.
Which Windows versions does RDBMS Playground support?
RDBMS Playground runs on Windows and is available for 64-bit (x64), ARM64 systems.
How do I uninstall RDBMS Playground?
Open Settings › Apps › Installed apps, find RDBMS Playground and select Uninstall. From the command line, run winget uninstall --id=LazyEvaluation.RdbmsPlayground -e.
Is there a portable version of RDBMS Playground?
Yes. RDBMS Playground is available as a portable program (rdbms-playground-v0.2.0-x86_64-pc-windows-gnu.exe, 64-bit (x64)) that runs without installation. Copy it to any folder or USB drive and run it from there.
Alternatives to RDBMS Playground
Other Command Line Tools programs for Windows from different developers.
