- A technique for validity checking that involves the associati on of digits with data. It is used in entering or updating fields in a data record.; 數(shù)字位與數(shù)據(jù)相聯(lián)合的一種正確性檢驗(yàn)技術(shù),用于數(shù)據(jù)錄入或更新數(shù)據(jù)記錄中的某些 字段。
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