(1) A hierarchical sequence of numbers that uniquely identifies an object.
(2) An identifier, which is usually a string of integers, that uniquely identifies a particular object within a distributed system.
(3) An ISO-defined format for identifying elements within an OSI network. An object ID consists of a string of integers. The integers in the string can identify a particular standards body, an enterprise, or the type or value of an object. An object ID is intended to be a universal identifier of an object. Examples of values that are specified in object ID format are abstract syntaxes, application context names, and application process titles.
(4) The unique 4-byte value or identifier that is assigned to a data model device. Object IDs can be used in SOAP commands, for quick searching in the data model or debugging.