CRUD
Create, Read, Update, Delete — the four basic operations every persistent-data API exposes.
Definition
CRUD names the minimum operations a data API needs: Create (POST), Read (GET), Update (PUT or PATCH), Delete. Most REST APIs map these one-to-one to HTTP verbs; the term is also used for any admin UI that exposes these operations over a table. CRUD is the baseline; richer APIs add search, batch ops, and domain-specific actions.