Patent attributes
A processing device translates a set of federated queries submitted to a federated data source server into a set of native data source queries for the particular type of data source using a federated data source connector for a particular type of data source, inputs the set of native data source queries for the particular type of data source into a component corresponding to the particular type of data source, marks the component in view of the set of native data source queries, and generates output indicating whether one or more of the set of native data source queries is not acceptable as input for the component. The marked component and the output indicate whether the federated data source connector for the particular type of data source includes an error.