Identifier

Identifier is a numeric or alphanumeric string that is associated with a single object or entity within a given system. Typically, identifiers are used to connect content in resources to external content available in other frameworks or protocols. Identifiers are associated with objects and may be changed or retired due to human or system process and errors.

标识符为一组与特定系统内单一对象或实体相关联的数字或字母数字字符串。通常，标识符用于将资源中的内容与存在于其他框架或协议中的外部内容相连接。标识符与对象相关联，可能因人为或系统流程及错误而变更或退役。