Wraith database
From The Stargate Omnipedia
Database containing the sum of Wraith information possessed by the species itself. The database contains extensive information on all Wraith technology, from Wraith hive ships organic design and weaknesses to the ventilation systems. The database itself is provided with an index.
KEY EPISODE
Allies - Michael's hive queen transmits a boobytrapped copy of the Wraith database to Atlantis, which eventually transmits back specific information before destroying itself.