The four basic operations that can be performed on persistent data in a database or other storage system.
- Create: This operation adds new data to the system. In a database, it usually involves inserting a new row into a table.
- Read: This operation retrieves existing data from the system. In a database, it usually involves querying the database to select specific rows or columns from a table.
- Update: This operation modifies existing data in the system. In a database, it usually involves changing the values of one or more columns in a row.
- Delete: This operation removes existing data from the system. In a database, it usually involves deleting a row from a table.
CRUD operations are fundamental to most applications that interact with data. They provide a way to manage and manipulate the application’s data to function.
In the context of RESTful APIs, CRUD operations are often mapped to HTTP methods:
- Create: POST
- Read: GET
- Update: PUT or PATCH
- Delete: DELETE
This allows applications to interact with data using standard HTTP requests, making integrating different systems and services easier.
