Sql

Raw data from your ingestion tool is not analysis-ready. Column names are whatever the source API called them. Booleans come in as integers. There are three different tables that all mean “customer”. The transformation layer is where you turn that mess into something your business can use. dbt (data build tool) is the standard here. You write SQL, dbt turns it into models, and those models are versioned, tested, documented, and repeatable. ...