OData
The Open Data Protocol (OData) is a standardized web protocol.
It supports easy integration and manipulation of data and is designed to be far more user-friendly for developing web and mobile applications than traditional web services.
OData is based on open web standards such as HTTP, the Atom Publishing Protocol, and JSON, and, like the World Wide Web, is built on the REST (Representational State Transfer) architectural style. Using OData, you can perform complex database queries based solely on the URL.
You can find all the information about the OData connector here.