Cscd refers to the Chinese scientific citation database, which is mainly responsible for collecting core journals in the fields of mathematics, physics, chemistry, astronomy, geoscience, biology, agriculture and forestry, medicine and health, engineering technology and environmental science. There are seven core periodical systems in China, and cscd is one of them.

CSCD extended definition:

In CSCD, library C represents the core and library E is the extended version.

Specific differences between CSCD and core journals;

1, the coverage of periodicals is different. There are seven databases in domestic core journals, including various cores, such as cssci, Chinese core, statistical source core, CSCD, EI and so on. CSCD is one of the databases and belongs to the core journals.

2. They are different databases. Core journals also refer to a database, that is, the core journals of Peking University, also called Chinese core. Because this core is the most popular in China, although it is not the most authoritative, core journals can be synonymous with Chinese core. At this time, the core journals and CSCD journals are two different databases.

Extended data:

There are seven core journals (or source journals) selection systems in China:

1, Chinese Core Journals of Peking University Library.

2. Nanjing University "China Social Science Citation Index (CSSCI) Source Journals".

3. China Institute of Science and Technology Information (CSTPCD, also known as "China Science and Technology Core Journal") "China Science and Technology Papers Statistical Source Journal".

4. Literature Information Center of China Academy of Sciences "China Science Citation Database Source Journal (CSCD)".

5. Outline of Core Journals of Humanities and Social Sciences in China, developed by the Document Information Center of Chinese Academy of Social Sciences. The first edition was published in 2000, and the citation database of humanities and social sciences in China (CHSSCD) was established.

6. The Catalogue of China Core Journals was developed by Professor Qiu Junping of Wuhan University.

7. The Comprehensive Citation Report of China Academic Journals, jointly developed by Tsinghua University Library and China Academic Journals (CD-ROM Edition), is published once a year. Establishment of Chinese citation database.

If the journal is recognized as the core by both core journal selection systems, then the journal is a dual-core journal.