Introduction: China Doctoral Dissertation Full-text Database (CDFD) is the full-text database of doctoral dissertations with the most complete content, the highest quality, the shortest publishing cycle, the most standardized data and the most practical data in China. Publication content: covering basic science, engineering technology, agriculture, medicine, philosophy, humanities, social sciences and other fields. By the end of 20 10 and 10, more than130,000 doctoral dissertations have been collected from 388 training institutions. Resource characteristics: including doctoral dissertations of key universities such as 985, 2 1 1 engineering, and scientific research institutes such as China Academy of Social Sciences. Album theme: The product is divided into ten albums: basic science, engineering technology I, engineering technology II, agricultural technology, medical and health technology, philosophy and humanities, social science I, social science II, information technology, economy and management science. The top ten albums are divided into 168 topics. Collection year: 1984 doctoral dissertations up to now. Product forms: Web version (online package library), mirror version, CD version, and traffic billing. Release time: 1, daily release: central website version, network mirror version, released every working day, except legal holidays.

2. Monthly publication: online mirror version and CD-ROM version, published every month 10 day. Publisher: China Academic Journal (CD-ROM Edition) Electronic Magazine.