identifier
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Article
10 sectionsContents
- Metadata
- In computer science
- In computer languages
- Ambiguity
- Identifiers (IDs) versus Unique identifiers (UIDs)
- Implicit context and namespace conflicts
- Identifiers in various disciplines
- See also
- References
- External links
thumb|alt=A German license plate with the value "TZ 66H" is mounted on the rear of a car|Vehicle registration plate|Registration plates are used to display identifiers for motor vehicles.
An identifier is a name that identifies (that is, labels the identity of) either a unique object or a unique class of objects, where the "object" or class may be an idea, person, physical countable object (or class thereof), or physical noncountable substance (or class thereof). The abbreviation ID often refers to identity, identification (the process of identifying), or an identifier (that is, an instance of identification). An identifier may be a word, number, letter, symbol, or any combination of those.