identifier

<programming, operating system>

1. A formal name used in source code to refer to a variable, function, procedure, package, etc. or in an operating system to refer to a process, user, group, etc.

Each different type of entity may have a different range of valid identifiers or "name space". For example, an identifier in C is a series of one or more letters, digits and underscores that does not begin with a digit. An identifier has a type, e.g. integer variable, hash, variant and a scope, e.g. block, global.

Last updated: 2006-05-29

<database>

2. (id) A primary key. The column containing a table's primary key is frequently named after the table with "_id" appended, e.g. "customer_id".

Last updated: 2006-05-29

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