SQL Toolkit Work with relational databases directly from the command line. Covers SQLite, PostgreSQL, and MySQL with patterns for schema design, querying, migrations, indexing, and operations. When to Use - Creating or modifying database schemas - Writing complex queries (joins, aggregations, window functions, CTEs) - Building migration scripts - Optimizing slow queries with indexes and EXPLAIN - Backing up and restoring databases - Quick data exploration with SQLite (zero setup) SQLite (Zero Setup) SQLite is included with Python and available on every system. Use it for local data, prototypi…