China Science Citation Database (CSCD) was established in 1989, which contains more than 1000 Chinese and English scientific and technological core journals and excellent journals published in the fields of mathematics, physics, chemistry, astronomy, geosciences, biology, agriculture and forestry, medicine and health, engineering technology and environmental science, and has accumulated since 1989. Chinese scientific citation database is rich in content, scientific in structure and accurate in data. In addition to the general retrieval function, the system also provides a new index relationship-citation index. Using this function, users can quickly find out the details of a cited scientific and technological document from millions of citations, and can also retrieve several recently published related documents from an early important document or author's name, which has important reference value for the development and research of interdisciplinary and new disciplines. China Science Citation Database also provides a data link mechanism to support users to obtain full text.
CNKI citation database, that is, Chinese citation database, referred to as CCD.
It contains references of all source database products published by China Academic Journal (CD-ROM Edition), including periodical citations, dissertation citations, conference citations, book citations, patent citations, standard citations and newspaper citations. By revealing the mutual citation relationship between various documents, the library can not only provide a new communication mode for scientific research, but also serve as an effective tool for scientific management and evaluation. As of June 5438+February, 2007, the cumulative number of cited documents has reached.
6848642 articles. It is divided into ten categories: basic science, engineering science and technology I, engineering science and technology II, agricultural science and technology, medical and health science and technology, philosophy and humanities, social science I, social science II, information technology and economy.