What protocol does the OData adapter use for accessing external data sources?

The OData adapter uses the Open Data Protocol (OData) for accessing external data sources, specifically versions 2.0 or 4.0. OData is a standard protocol that allows the creation and consumption of queryable and interoperable RESTful APIs in a simple and standard way. By adhering to this protocol, the OData adapter facilitates seamless communication between Salesforce and various external data sources, allowing users to retrieve and manipulate data effectively.

This protocol offers capabilities such as querying and data manipulation through standard HTTP requests, making it suitable for integration scenarios in modern applications. It also supports features like filtering, sorting, and pagination, which enhances the flexibility and efficiency of data retrieval.

The other protocols listed do not specifically correspond to the standard used by the OData adapter, which is focused on RESTful interactions through the OData specifications.