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Identifiers

An identifier is a name used to identify a specific entity, such as a variable, a function, or a constant, within a programming language or system.

Senses and Usages:

1. Programming: In computer programming, identifiers are used to name variables, functions, classes, or other entities. They act as labels to refer to these entities throughout a program.

Example sentence: In Python, variable identifiers must start with a letter or underscore.

2. Database: In databases, identifiers are used to uniquely identify records, tables, columns, or other database objects.

Example sentence: The primary key in the "Customers" table serves as an identifier for each customer record.

3. Mathematics: In mathematics, identifiers are used to represent variables, constants, or unknown quantities in equations or formulas.

Example sentence: In the equation x + y = 10, the identifiers "x" and "y" represent the unknown quantities.

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