The Wharton Research Data Center (WRDS) is an industry-leading data research platform and business intelligence tool used by more than 50,000 academic, government, nonprofit, and corporate clients in 36 countries. WRDS began in 1993 to support the research work of faculty members at the Wharton School of the University of Pennsylvania and has since grown into a standard tool for the global research community. WRDS gives users access to more than 250 terabytes of data in one place, covering areas as diverse as finance, marketing and economics. WRDS includes more than 600 sublibraries from more than 60 data providers, including S&P Global Market Intelligence data (Compustat and Capital IQ), Chicago Center for Research in Security Prices (CRSP), Thomson Reuters, GTP, and others. Such databases provide raw data for third-party vendors and are grafted onto the WRDS platform. WRDS also provides 10 public databases including CBOE and Bank Regulatory. The WRDS platform provides seamless access to massive databases and provides a unified access interface for the different databases hosted to help researchers simplify the data extraction process. 

VIP Chinese periodical service platform, comes from the Chinese science and technology journal article database founded by Chongqing VIP information co., LTD., is a large comprehensive database with data quality and resource guaranteed for the core product. It sorts through the data and information, uses intelligence analysis and data mining objectification to give full display to the value of data. It has completed the upgrade from "periodical document database" to "periodical big data platform", which makes Chinese periodical platform have the value of resource guarantee & knowledge information. 

Wanfang Data China dissertations database is the most full-text dissertations database in China. In 2006, more than 680,000 full-text dissertations were collected. The dissertation database comes from the national legal dissertation collection unit Institute of Scientific and Technical Information of China, which collects the dissertations of more than 500 degree-granting institutions in China, involving the national 211 key universities, Chinese Academy of Sciences, Chinese Academy of Engineering, Chinese Academy of Agriculture, Chinese Academy of Medicine, Chinese Academy of Forestry and other institutions. The content covers science, industrial technology, humanities, social sciences, medicine and health, agricultural science, transportation, aerospace and environmental science. Dissertations collected since 2000 will be backtracked year by year and added monthly. 

Wanfang Database is a large-scale online database developed by Wanfang Data Company, covering journals, conference minutes, papers, academic achievements, and conference papers; It is also a professional academic database in China on par with CNKI. Its development company, Wanfang Data Co., Ltd., is the first joint-stock high-tech enterprise in China to focus on information services. It is a comprehensive information service provider in the internet field that integrates information resource products, information value-added services, and information processing solutions.

The current issues of some important journals have not been included in any database yet, so the library orders them separately and are listed here. For example, the top mathematics journal Annals of mathematics (Annual journal of Mathematics), where Zhang Yitang's paper bounded distance between primes were published. Some of the paper periodicals ordered by the library are also listed here with access to their electronic periodicals. 

Duxiu Academic search is a knowledge search and literature delivery system, providing users with in-depth literature search including metadata search, bibliographic search and full-text search, and providing partial literature delivery service within the scope of copyright for the search results.  The retrieval system of Duxiu is a three-dimensional and in-depth retrieval system, which provides three retrieval channels of bibliography, chapter and full text, and realizes the vertical search of catalog and full text, so that readers can obtain in-depth, accurate and comprehensive information of literature resources in the shortest time. Duxiu book retrieval system can not only display the detailed information of the book, but also provide the original text of the book display, so that readers can clearly judge whether they need the book, and improve the information accuracy rate and the efficiency of readers’ book search and borrowing. 

Iresearch e-book aims to gather the high-quality e-book resources of the world's leading presses and provide one-stop academic research reference services. At present, the platform has reached cooperation agreements with more than 40 international well-known publishing institutions such as Oxford, Cambridge, Brill and John Benjamins. As of April 2020, Iresearch has launched 180797 kinds of e-books, covering humanities and social sciences, science and technology, medicine and other disciplines. 

Wiley E-text features a selection of Wiley's internationally renowned original textbooks for readers to teach, study and refer to more conveniently and quickly through online reading and downloading. These publications are written by internationally renowned authors and scholars and have been designated as teaching reference books by several top-tier internationally renowned institutions, including MIT, Columbia University, Yale University, Harvard University, Princeton University, Cambridge University, etc.  

Founded in 1807, Wiley Press is one of the oldest and best-known publishers in the world. Wiley is one of the world's top three academic publishers and the world's largest publisher of academic associations, working with more than 900 academic associations each year. Since 1901 to the present day, Wiley has published the works of more than 460 Nobel Prize winners. More than 1,600 academic journals are included on the Wiley Online Library platform, including more than 1,200 on the Web of Science, covering almost all disciplines, including the humanities and social sciences, natural sciences, and health sciences. The library ordered all of Wiley's current issues. NSTL purchased Wiley Press's Backtracking Journal Database (927 academic journals, back in 1997 to its founding year) to provide services to domestic institutional users under national license, see "Notice of NSTL's opening of Wiley Backtracking Journal Database for the whole country". The library also purchased some Wiley reference books.  

The Web of Science database contains more than 12000 authoritative and influential academic journals in the world which can be traced back to 1900 and covering natural science, engineering, biomedical science, social science, art and humanities, etc. The core collection of Web of Science contains references cited in papers and makes a unique citation index according to the cited author, origin and publishing age.