I am totally confused between the terms of journals have impact factor, journals have Scopus index number and journals have Thomson Reuters index number. Could anyone explain for me when we should use these terms?
Thomson Reuters is the organization that releases ans calculates impact factor. So Thomosn Reuters is the company and IF is the product. Thomson Reuters also has a databases called "Web of Science" and it calculates IF for all indexed journals in that database"
SCOPUS is another database, owned by Elsevier company and it calculates CiteScore for all journals indexed in it.
Thomson Reuters is the organization that releases ans calculates impact factor. So Thomosn Reuters is the company and IF is the product. Thomson Reuters also has a databases called "Web of Science" and it calculates IF for all indexed journals in that database"
SCOPUS is another database, owned by Elsevier company and it calculates CiteScore for all journals indexed in it.
If both company calculate the quality of a journal, thus, it makes easier for you to choose the best to publish. However, scientifically, what's important is the scope of the journal and time taken to process and publish a manuscript and the cost of publishing.
The Thomson Reuters changed its name into Claryvate Analytics, and it is a journal articles database. It indexes papers from many journals that passed a threshold of citations, and several other quality criteria. The Impact factor is an indicator, created by this database to rank journals according to quality (relation of citations to publications). Scopus is another journals' indexing database, created by the publisher Elsevier, and it also created an impact factor, calculated differently. Calryvate Analytics is considered a more selective database than Scopus. The inclusion rate of Scopus is higher than in Claryvate.