The Web of Science Database, formerly known as the ISI, is a database derived from Clarity Analytics USA. This database is one of the citation databases that includes all scientific topics including technical and engineering sciences, medical sciences, humanities and agriculture. This database covers resources in various fields of science from 1864 until now.
This database has a total of 22 sub-databases, 10 of which are subsets of the Core Collection of this database. The web collection of Web of Science collection has a very high credit rating due to the existence of special conditions and standards for indexing and accepting journals and is one of the most important sources in this field. Currently, the volume of information in this database is more than 70 million documents.