What is identifier?

  • (noun): A symbol that establishes the identity of the one bearing it.

Identifier

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, physical object (or class thereof), or physical 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.

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Some articles on identifier:

Cellular Data Communication Protocol - DTAP (GSM) - Transaction ID / Skip Identifier
... Either a transaction identifier, or a skip indicator depending on the level 3 protocol ... The transaction identifier contains the transaction value and flag which identifies who allocated the TI ...
Book Item And Component Identifier
... The Book Item and Component Identifier, or BICI, is a draft standard of the United States National Information Standards Organization (NISO) that would provide a ... to the Serial Item and Contribution Identifier ...
Identifiers in Various Disciplines
... A small sample of various identifiers Identifier Scope atomic number, corresponding one-to-one with element name international (via ISV) Australian Business Number Australian CAGE code U.S ... today international Digital object identifier (DOI, doi) Handle System Namespace, international scope DIN standard number originated in Germany today international E number originated in E.U ... Global Trade Item Number international Group identifier many scopes, e.g ...
Scalar (computing) - Identifiers Referencing A Variable
... An identifier referencing a variable can be used to access the variable in order to read out the value, or alter the value, or edit the attributes of the variable, such as access permission, locks, semaphores, etc ... For instance, a variable might be referenced by the identifier "total_count" and the variable can contain the number 1956 ... If the same variable is referenced by the identifier "x" as well, and if using this identifier "x", the value of the variable is altered to 2009, then reading the value using the identifier "total ...
C Sharp Syntax - Basics - Identifier - Keywords
... If an identifier is needed which would be the same as a reserved keyword, it may be prefixed by the @ character to distinguish it ... void while where 2 yield 1 Using a keyword as an identifier string @out // @out is an ordinary identifier, distinct from the 'out' keyword, // which retains its special meaning ...