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Tag Archives: Duplication

Data Modelling: The Power of QUACKs and UIDs

Codes are Not Identifiers In my previous post on how unique keys cause duplication in databases I demonstrated that codes are not identifiers for data entities and, by extension, they cannot be unique identifiers (UIDs). Why Do People Use Codes? If codes are not identifiers how come they are used so extensively?  Because, when used […]

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