SQLite is a small and potent SQL in-process database engine. The main trait is self-containment; it runs on any operating system, has very few dependencies, and runs in the application process itself(so no need for a new database server). The self-containment allows us to use a database in places where this is usually a hard thing to do.

One of those places is ETL jobs; the challenge of transforming large datasets in code is memory usage. SQLite allows us to temporarily store our datasets and so liberate ourselves from the machine memory limit, thus making it a powerful tool for running large ETL jobs. On top of that, we get all the benefits of regular databases and SQL.

#etl #nodejs #sqlite #javascript