Digital Object Identifier (DOI) is a set of mechanisms for identifying digital resources, including videos, reports or books. It has both a mechanism for naming resources and a protocol for resolving identification numbers into specific addresses.
The forms of DOI mainly include QR code, bar code, character code, network domain name and so on. The uniqueness of digital objects is a typical feature of DOI and an ID number in the digital age.
Extended data:
Doi code consists of a prefix and a suffix, the prefix is separated by/,and the prefix is divided into two parts. The prefix is determined by the International Digital Object Identification Number Foundation, and the suffix is specified by the resource publisher.
Used to distinguish a single digital data, unique. Publishers can choose which unit to register. For example, a book can be registered with a DOI, or it can be registered separately according to different chapters, or even one of the tables or pictures can be registered independently.
Baidu encyclopedia -—doi