Books and journal articles have long benefited from an infrastructure that makes them easy to cite, a key element in the process of research and academic discourse. NODC . Datacite DOI® (Digital Object Identifier) is used to permanently identify a set of data for the purpose of its publication on-line and for its quotation in the scientific literature. The dataset to which a DOI has been assigned is consistently available and remains static. The specific version is "frozen" at the time of assigning a DOI.believes that citing data should be possible in the same way as citing other sources of information, such as articles and books. Digital Object Identifiers (DOI) of datasets assure reliable, predictable, and unambiguous citation and access to data.