First, the author's way Many retrieval systems have an author index and an institution index, and patent literature retrieval systems have an patentee index. The method of searching from the names of authors, editors, translators and patentees or the names of institutions and groups by using these indexes is collectively called author method.
Two, the title includes title, title, title and other ways. Some retrieval systems provide retrieval methods by title, such as title catalogue and periodical catalogue.
Thirdly, the classification method searches documents according to the subject classification system. This method is based on knowledge system. Therefore, it can better reflect the discipline system, reflect the affiliation, derivation and parallel relationship between disciplines and things, and facilitate us to find documents from the scope of disciplines and play the role of "analogy". Classified retrieval mainly uses classified catalogue and classified index.
Fourthly, the subject method searches the literature through the subject words that reflect the content of the literature. Because the thematic method can reflect all aspects of a theme, it is convenient for readers to conduct a comprehensive and systematic thematic study on a certain problem, thing and object. We can find all aspects of the literature on the same subject through the subject catalogue or index.
Verb (abbreviation of verb) refers to the reference or quotation attached to the document, which is one of the external characteristics of the document. The index system compiled by using this citation is called citation index system, which provides a method to retrieve cited papers from cited papers, called citation method.
Six, serial number method Some documents have specific serial numbers, such as patent number, report number, contract number, standard number, international standard book number, serial number, etc. The file serial number is clear, short and unique, which is used to identify some files. Based on this, various serial number indexes can provide a way to retrieve literature information in the order of serial number itself.
7. Codes compiled by using some codes of things, such as molecular formula index and ring index, can be retrieved from a specific code order.
Eight, special project method from the literature information contained or related terms, place names, names, organization names, trade names, biological generic names, years and other specific order to retrieve, can solve some special problems.
Tpc (transaction processing performance Council) is a non-profit organization, which is responsible for defining transaction processing and database performance benchmarks and publishing objective performance data according to these benchmarks. TPC benchmark test has extremely strict operational requirements and is conducted under the supervision of independent audit institutions.