The paper retrieval number is one of the unique identifiers for retrieving papers in the paper database. A paper has only one retrieval number in the collection database, and the retrieval number will not be repeated, which is the ID number of the paper in the collection database. The uniqueness of the retrieval number is beneficial to the retrieval of papers.

What the search number does:

The paper retrieval number is unique in the database, which makes the ID number of the paper beneficial to the management of database entries and the rapid retrieval of the paper. In addition, some search numbers can also reflect some properties of the paper, which is convenient for readers to understand quickly.

inclusion relation

The paper retrieval number is relative to the document retrieval platform, which is generally considered as "access? No "(Tibet); Being included is relative to the literature database, and they are not in the same dimension. Specifically, SCI corresponds to SCIE(Science? Quote? Index? Expand) abstract library, ISTP corresponds to the abstract library of CPCI, and Ei corresponds to EI? Compendex abstract database belongs to a retrieval platform and must have the corresponding retrieval number. Judging from the retrieval numbers of SCI and ISTP, the new version of * * * is identified as WOS and cannot be distinguished. Therefore, at present, these retrieval numbers do not have the function of representing specific databases. Then, the retrieval number cannot be a sufficient condition for articles to be included by SCI, ISTP and EI, but only a necessary condition.