The Data-Banks contain encyclopedic information on important (from the Time Lords' point of view) planets, phenomenon, time zones, and people. It even has records of the fashions for various worlds. Entries include description of topic, a list of alternate nomenclature, derivation of name, space-time coordinates, and related entries. The Databank's historical records automatically update the tenses of its sentences based on the current time zone. After materialization, the TARDIS records all of a planet's radio signals and analyses the layout of any local cities. It also automatically records all audio and visual images presented on the Scanner screen. All of this information is filed in the Data-Bank.
The following color code is used:
- Black: For information from the TV Series, including Dimensions in Time, and 1996 TV Movie.
- Blue: For information from the Novels and Audios including Target, Virgin, BCC, and Big Finish.
- Green: For information from 'licensed' reference sources such as the Technical Manual, Doctor Who Magazine, and the Role Playing Games.
- Red: For information from unofficial sources -The Faction Paradox series, behind the scenes interviews, author's speculation, and popular fan belief.
The TARDIS Technical Index is copyright Will B Swift.