According to the content and processing depth of the document, the document can be divided into: zero document, primary document, secondary document and tertiary document.
(1) Unprocessed and published manuscripts, original data records and other documents belong to zero-time documents, which are the basis of primary documents.
(2) Monographs, newspapers, journals, patent documents, standard documents, conference documents, samples and other finished documents are primary documents;
(3) Reprocessing of primary documents, By organizing, refining and compressing, and ordering according to its external characteristics (title, author, physical characteristics of the document) and content characteristics, another new type of document form is formed - catalog, bibliography, index, abstract. This is secondary literature. ;
(4) Use secondary literature to select relevant primary literature and then analyze and synthesize it to compile the third-level document form - special reports, reviews, progress, manuals, and encyclopedias , yearbooks and other reference books, these are three documents.
Extended information:
The traditional hierarchical enumeration classification method is gradually developing towards the faceted combination classification method. Including: continue to improve the faceted combination classification method to achieve the purpose of practical application; transform the traditional hierarchical enumerated classification method so that it gradually develops in the direction of faceted combination; combine the hierarchical enumerated classification method with the faceted combination method. Used in conjunction with the matching classification method.
The classification method and the subject method are gradually becoming integrated. Classification and subject methods are becoming increasingly compatible in terms of concept (terminology) system, reference system, indexing system, indexing system, and retrieval system. Document classification methods are gradually becoming standardized and internationalized. ⑤ The preparation, management, indexing and retrieval of document classification tables are gradually becoming automated.
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