A linguistic database was a compiled collection of known languages. The Vulcans maintained such a database as early as 2151, when they shared samples of Klingonese with the United Earth Starfleet. (ENT: "Broken Bow") The Enterprise later maintained its own database, which could be tied in with the universal translator. (ENT: "Fight or Flight") When Hoshi Sato suffered from hallucinations while in a pattern buffer, she claimed that crewman Baird had translated a complex language, even though he knew nothing about the ship's linguistic database. (ENT: "Vanishing Point")