Collection means that after an article is published, if the journal is included in the database, the paper can be found, indicating that the paper has been successfully included in the database. There are many databases for collecting papers in China, such as HowNet, VIP, Wanfang and Long Yuan, which are also familiar databases. After the paper is hired and published by the magazine, the magazine will be made into an electronic version and directly included in the database. Which data articles are included in depends on which databases journals are included in.

Extended data:

After knowing the published paper title, paper number, author's name, publication date, periodical name, domestic serial number and foreign serial number, which databases should be included and filled in, especially the database name of periodicals should be filled in comprehensively.

For example, there are many databases of Pharmacy in China, including CA Chemical Abstracts (USA), source journals of CSCD Chinese Science Citation Database (including extended edition), Wanfang Collection (middle), Shanghai Library Collection, Cambridge Science Abstracts, Copernicus Index (Poland), National Library Collection, HowNet Collection (middle), and core journals of statistical sources (core journals of scientific papers in China). It is impossible to check all these databases. Generally speaking, depending on which databases the company needs, only a few databases are commonly used. Just check whether there are papers in the corresponding database.