1, the core coverage of Peking University and Chinese Department is different.

The core of Peking University mainly includes domestic academic journals, including Chinese journals of China Academy of Sciences Library, foreign journals of China Academy of Sciences Library, Chinese dissertations of China Academy of Sciences Library and foreign dissertations of China Academy of Sciences Library. Chinese core includes China academic journals, China dissertations, China newspapers, China conference papers, China reports, China government documents, China standard documents and China patent documents.

2. The collection time of the core of Peking University and the core of Chinese Department is also different.

The literature collected in the core of Peking University is mainly from 1956 to the present, while the literature collected in the core of Chinese covers the literature from 1949 to the present.

3. The languages of the core of Peking University and the core of Chinese Department are different.

The literature included in the core of Peking University is mainly China literature, while the literature included in the core of Chinese Department includes both China literature and English literature.

4. The retrieval methods of Peking University Core and Chinese Core are also different.

The core of Peking University adopts keyword-based retrieval method, while the core of Chinese adopts topic-based retrieval method. In a word, Peking University Core and Chinese Core are two different literature databases, which are obviously different in the scope, time, language and retrieval method.