1. A method for querying data stream sources, comprising: receiving a single user query for querying multiple data streams, where the single user query specifies a property, wherein the property comprises a data transmission property; after the receiving, determining a plurality of data stream sources matching the property, wherein the plurality of data stream sources comprises a plurality of sources of clicks on a web site; after the determining, automatically generating a set of queries based solely upon the property specified by the single user query, wherein each one of the set of queries is a different type of query corresponding to a respective one of the plurality of data stream sources; and executing the set of queries over the plurality of data stream sources.