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Build a database you can explain, query, test, and improve.
This hands-on guide takes you from relational modeling to production readiness through one PostgreSQL shop database. You will design tables and keys, write reliable queries, join and aggregate order data, use CTEs and window functions, protect changes with transactions, and read query plans before tuning indexes.
You will also work through parameterized Python queries, restricted database roles, regression tests, migrations, backups, and a restore rehearsal. Each chapter includes an exercise with an expected result so you can check your work as you go.
PostgreSQL is the runnable reference. SQL Server differences are clearly labeled where they matter. No prior database experience is required; basic programming familiarity helps.
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