The basic information needed to uniquely identify a computer record, rate, or fare.
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Glossary - K
The fields of a record that uniquely define that record. No two records for the same Prop, Tariff, and Carrier, with identical key fields, can exist in the file.
The basic information needed to uniquely identify a record for data maintenance purposes, such as record or table number.
A fixed-value deduction from the published tariff amount.