A number that indicates the location of a logical record, expressed as a difference with respect to a base address. The relative record number is used to retrieve the logical record from the data set.; 一種指明邏輯記錄位置的號(hào)碼，用相對(duì)于基地址的差值來(lái)表示。使用相對(duì)記錄號(hào)可以從數(shù)據(jù)集中檢索出相應(yīng)的邏輯記錄。