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What is a duplicate identifier?

April 26, 2017duplicate identifier

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What is a duplicate identifier?

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When a database contains instances of the same identifier in a name space in different sequence records, the identifiers are called duplicate. Duplicate identifiers are more prone to being problematic than redundant identifiers, because the association between database records (sequences) and duplicate identifiers is not unique. An identifier can be both redundant and duplicate. The xdformat program reports duplicate identifiers.