Pathweb
The Pathweb, also known as the command network (AUDIO: Jubilee) and the Dalek galactic webwork, (PROSE: The Quantum Archangel) was the shared intelligence of the Daleks, containing information on their history and experiences. It was more an artificial telepathic link than a true hive mind; (TV: Asylum of the Daleks) the Sixth Doctor described it as "artificial telepathy between Daleks," (AUDIO: The Curse of Davros) and when he compiled a list of supercomputers, he included the Dalek Emperor because it was connected to the Dalek galactic webwork. (PROSE: The Quantum Archangel)
Using the command network, one Dalek could contact all others to share information. (AUDIO: Jubilee) Susan Mendes and Kalendorf were able to hack into the Dalek Emperor's command network and cause all Dalek technology to self-destruct, creating the Great Catastrophe. (AUDIO: Dalek War: Chapter Four)
The Doctor once attempted to hack into the Pathweb, but was unsuccessful. When several inmates of the Dalek Asylum attacked his eleventh self upon recognising him, Oswin Oswald, already part of the Pathweb because of her conversion into a Dalek, deleted all information connected with the Doctor from the Pathweb. This resulted in all memory of the Doctor by the Dalek race being forgotten. (TV: Asylum of the Daleks) Despite Oswin's efforts, the Daleks regained knowledge of the Doctor from Tasha Lem during the Siege of Trenzalore. (TV: The Time of the Doctor)
A Dalek christened Rusty by the Twelfth Doctor later had its suppressed memories unlocked and then saw several past Dalek experiences through the Pathweb (TV: Into the Dalek), which were the memories of Henry Van Statten's "Metaltron" exterminating Bywater as it escaped the Vault in the Battle of GeoComTex (TV: Dalek) and Davros's New Dalek Empire attacking the Valiant during the 21st century Dalek invasion of Earth. (TV: The Stolen Earth)
The Twelfth Doctor believed the Pathweb's database was greater than even the Matrix on Gallifrey. With the help of Rusty, he accessed it to gain information on the Testament. Rusty was able to display the information he accessed holographically for the Doctor. (TV: Twice Upon a Time)
