Databases & SQL for Beginners

SQL vs NoSQL: When Each One Wins

SQL vs NoSQL for beginners, tested for real: the same kettle shop stored in PostgreSQL (SQL) and MongoDB (NoSQL), with the same mistakes made in both. PostgreSQL refuses to sell the last kettle twice, refuses an order for a customer who doesn't exist and undoes a half-finished order; MongoDB takes a new kind of product at once and returns a whole order in one read. Then where the two now overlap, and how to choose for your app.