1, China Knowledge Network (CNKI) is one of the largest digital libraries and academic literature databases in China, providing a large number of Chinese academic resources. Including academic journals, doctoral dissertations and conference papers of various disciplines in China.
2. Wan Fang Data is a comprehensive academic resource platform, covering many fields such as science and technology, humanities and social sciences. The database provides a large number of Chinese periodicals, doctoral and master's dissertations, conference papers and other resources, as well as some foreign documents.
3.VIP。 Com is a database that mainly searches for scientific and technological documents, covering many fields such as engineering, medicine and biology. The database provides a large number of Chinese periodicals, doctoral dissertations, patents and other resources, as well as some foreign documents.
Wanfang Data Resource System (China Information) was developed by China Institute of Science and Technology Information and Wan Fang Data Co., Ltd. This database contains a wide range of journals, including academic journals and non-academic journals, and provides full-text retrieval of about 2,000 electronic journals.
All included academic journals have obtained the certificate of "China Core Journals (Selected) Database Source Journals". Individual journals even changed "featured" to "featured" or simply removed it. Many authors mistakenly believe that this is a core journal.
Content of literature database:
This corresponds to its traditional literature information. The content and formal features of a book or a document are recorded to form a clause. Entries are the basic units of literature information.
In literature database, a term is called record, and record is also the basic unit of literature database. Entries are composed of descriptive entries such as title, author and subject, and descriptive entries are called fields in the literature database.
A field can be subdivided into several subfields. In this way, the literature database consists of a series of continuous records, fields and subfields, and forms a hierarchical tree structure.