A query table is a table structure within a StreamBase application used for storing tuple values outside of a stream. In this unit we examine the query table, how to configure it and how to use the query operator to access items in the query table. The net result is that the application can share data and maintain state. Within a Connected Intelligence System of Insight, the query construct can be used in any of the the ingest, automate, or track phases. This is part 1 of a 3 part video segment.