Real World article
(written from a Production point of view)

Referenced in the first draft script of the Star Trek: Deep Space Nine seventh season episode "When It Rains...", a routing log was a record of changes made to a database.

In the script's 2375 setting, Chief Miles O'Brien attempted to search through the entire routing log of Starfleet Medical's main computer, using a data-sifter, in an attempt to help Doctor Julian Bashir determine who had changed some of the computer's files. Upon setting up the data-sifter, O'Brien wasn't sure how long it would take to search through the entire routing log. The attempt was ultimately thwarted by a burn-back, but not before Bashir and O'Brien managed to see that the burn-back suggested it was likely done by Section 31 operative Sloan.

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