The S/4HANA data model is defined using a collection of standard JSON documents that contain the data, identifiers, and object relationships for a given service. These documents are stored on URL endpoints that are accessible using sets of proprietary OData API calls. To expose S/4HANA resources to SQL applications, the driver maps S/4HANA endpoints to one schema and each schema has a set of relational parent and child tables. The following sections describe the relational tables exposed by the driver along with their corresponding S/4HANA OData API call.