The disclosure generally describes computer-implemented methods, software, and systems for creating and using shared queries based on heterogeneous data sources. One example method includes receiving a request to execute a shared query, identifying at least one data source and a query specification associated with the shared query, generating a native query for each identified data source based on the identified query specification, executing the generated native queries at the respective data sources to collect a set of query results from the respective data sources, and formatting the set of query results from the respective data sources into a unified set of query results.