There are several types of literature information databases.

What is a document information database? China Knowledge Network (CNKI), Wanfang Database, VIP Information, National Literature Center for Philosophy and Social Sciences, WebofScience, PubMed, etc.

1, China Knowledge Network (CNKI)

China HowNet is the largest academic database in China, covering all kinds of academic journals, doctoral and master's dissertations, conference papers and so on. It is rich in content and has high academic value.

2. Wanfang Database

Wanfang Database is also a large-scale academic database, which contains many types of academic resources, such as periodicals, dissertations and patents.

3.VIP information

VIP Information is a platform for providing scientific and technological information services, which contains a large number of scientific and technological journals and patent information.

4. National Documentation Center for Philosophy and Social Sciences

The center contains a large number of academic documents related to national philosophy and social sciences, which is very useful for researchers in the field of humanities and social sciences.

5. Network science

This is an international academic database, which contains a large number of academic journals and papers and is widely used in scientific research evaluation and academic research.

6. Postgraduate entrance examination

PubMed is a biomedical database, which contains a large number of biomedical related journals and papers.

Baidu Encyclopedia-Postgraduate Entrance Examination