(1) Unprocessed and published manuscripts, original data records and other documents belong to zero-level documents and are the basis of first-level documents.
(2) Monographs, newspapers, periodicals, patent documents, standard documents, conference documents, samples and other finished documents belong to the original documents;
(3) Re-processing, sorting, refining and compressing the first-class documents, and sorting them according to their external characteristics (title, author, physical characteristics of documents) and content characteristics to form another new document form-catalogue, bibliography, index and abstract, which is the second-class documents;
(4) Using the secondary literature, select the relevant primary literature, and then analyze and synthesize it to compile the tertiary literature forms-special reports, reviews, progress, manuals, encyclopedias, yearbooks and other reference books, which are the tertiary literature.
Extended data
origin
The word "Wen" was first seen in The Analects of Confucius and Eight Books. In the Southern Song Dynasty, Zhu's "Notes on Four Books and Chapters" thought that "Wen, Jing also; Dedicated, virtuous. "
Therefore, the literature at this time refers to ancient books and articles, refers to the knowledge and remarks of ancient sages, as well as their familiar etiquette and their own experiences. There are also relevant quotations in the Collection of Yu Xia and Yi Shu, which show that the original meaning of "Wen" refers to ancient books and sages.
In Song Dynasty, Ma Duanlin took literature and dedication as the basis of narration and discussion: "Literature" is a book of classics and history, with hundreds of biographies; "Dedication" is a record of official achievements, a Confucian comment, a talk of celebrities and an appointment of officials.
Under his influence, the understanding of literature is limited to general written records, and what cannot be expressed in written records cannot be called literature.
The literature mentioned today mainly refers to the relatively important written materials with historical significance, and the broad definition of literature has become all the carriers of recording knowledge.
Baidu encyclopedia-literature
Baidu Encyclopedia-Three Documents