Which request method is used to create/provision an Autonomous Database (ADB)?

The request method used to create or provision an Autonomous Database (ADB) is POST. This method is specifically designed for operations that result in a change to the server's state or for creating new resources. In the context of web APIs, POST requests are commonly used to send data to the server to create a new resource or initiate a process that modifies the server's state.

When you submit a POST request, you typically include the necessary data in the request body, which allows the server to understand what specific resource you're asking it to create. In the case of provisioning an Autonomous Database, the details about the database configuration, type, and other settings are sent with the POST request, indicating that a new database instance is requested.

Other request methods, such as GET, PUT, and DELETE, serve different purposes. GET is used to retrieve data without modifying the state, PUT is generally for updating an existing resource, and DELETE removes a resource. Therefore, POST is the correct method for creating or provisioning new resources like an Autonomous Database.