Query model over information as a networked service

Data is published by publishers to an information service configured to receive data sets and allow consumers to consume the data sets via queries. Structural information of the data sets (e.g., column information) is presented to the publishers to select which information of the data sets can be a search parameter and which information can be returned in query results. Query interfaces are automatically created based on the selections by the publisher, and the back end databases are optimized for such query interfaces, e.g., creation of indexes based on the search parameters or query results selected by the publisher. A query aggregator can automatically combine a given query interface with other query interfaces to form more complicated (but still permitted) queries based on the intersection of permissions for the given query interface and the other query interfaces.