Abstract: A federation management service may receive an indication of multiple data sources to integrate into a federated application programming interface (API). One of the data sources is a database that is associated with an API schema that includes annotations that map elements of the API schema to the features of the database. The federation management services processes the API schema to generate the federated API. The federated API may receive a request for an element that is mapped to the feature of the database, generate a query based on the annotations of the API schema, and return a result based on the generated query.

Abstract: Methods, systems, and devices for data processing are described. A federation management service may receive a user selection of a first data source and a second data source via a user interface of the federation management service. The first data source and the second data source may be associated with different data source types. The federation management service may extract schema information from the first data source and the second data source by using source extensions to parse the first data source and the second data source. The federation management service may generate a federated data model by using the schema information to translate the first data source and the second data source into intermediate data sources with a common feature set. Accordingly, the federation management service may generate a target data schema for a federated application programming interface (API) based on the federated data model.