To add to this answer, an ORM is useful to deploy queries across multiple database vendors (e.g. Oracle, Postgres, SQLite) without re-writing queries. When used correctly it sanitizes SQL as well as supports with typing, as this library assist with.

Though to add to another comment, this is pretty basic in the CRUD and front-end world, and learning how to learn when confronted with unfamiliar information is a very useful life skill.