1. Setup SQLite or PostgreSQL and load sample data using baseline_queries.sql.
2. Run baseline query and note execution plan.
3. Apply index from optimized_queries.sql and run optimized query.
4. Compare execution plans and timings.
5. See docs/performance_report.md for details.

Commands example for SQLite: sqlite3 test.db < baseline_queries.sql sqlite3 test.db < optimized_queries.sql