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alphanumeric data

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alphanumeric data

Data made up of any of the letters of the alphabet and any digit from 0 to 9. The classification of data according to the type or types of character contained enables computer validation systems to check the accuracy of data: a computer can be programmed to reject entries that contain the wrong type of character. For example, a person's name would be rejected if it contained any numeric data, and a bank-account number would be rejected if it contained any alphabetic data. A car's registration number, by comparison, would be expected to contain alphanumeric data but no punctuation marks.



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Data qualifiers can take one of three forms: alphanumeric Data Identifiers (DI), numeric Application Identifiers (AI), or alpha Text Element Identifiers (TEI).
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Category Characteristics Data sets Alphanumeric data residing in a wide variety of data processing applications; managed in flat file, networked, hierarchical; relational and object-oriented databases Structured text / Alphanumeric data, markup data, office documents tags to other data types (e.
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