"The PNR is not a database record in the conventional sense. It is a structured document, closer to an append-only log, held inside the GDS that created it."
"The concept was defined by IATA in the 1960s, formalised as Recommended Practice 1830, and has remained structurally consistent since."
"The locator, DDTCIV, is six characters long. It is unique within Amadeus's system. It is not guaranteed to be unique across all GDS systems globally."
A Passenger Name Record (PNR) is a crucial data structure in commercial air travel, defined by IATA in the 1960s. It is not a conventional database record but a structured document held in the Global Distribution System (GDS) that created it. Each PNR has a locator, like DDTCIV, which is unique within its GDS, such as Amadeus. However, this locator is not guaranteed to be unique across different GDS systems, meaning the same locator can exist for different passengers in different systems.
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