Bonus Assignment for Carleton University COMP3005 Database Management Systems.

A tiny, from-scratch interpreter for a Relax-style input language. It reads relation definitions and a relational algebra query, parses them into an AST, executes the operations, and prints the result as a table.

Operations supported:

• Selection (σ / select),
• Projection (π / project),
• Join (⋈ / join ... on ...),
• Set operations (⋃/union, ∩/intersect, −/diff),
• and rename.

Test files are also available for viewing.

From the project root run:

python -m relatom.repl

No dependencies beyond Python standard library for the core engine and pytest for test files.