Incorporated Databases
CiNii Research enables users to search data from a wide range of databases as shown below.(As of June 18, 2026)
| No | Database Code | Database Name (Providing Institution) |
Data Type | Contents |
|---|---|---|---|---|
| 1 | Crossref | Crossref | Articles | CrossRef is a service operated by a non-profit organization jointly funded by scholarly publishers that centrally manages links to electronic journals. It provides links to the full text of articles held by publishers. Only the data included from other databases are displayed with links to the corresponding article information in CrossRef using the data provided by CrossRef. If you are eligible to view the article, you can view the full text. |
| 2 | JaLC | JaLC | Articles Data |
JaLC is a service jointly operated by four Japanese academic institutions that registers DOIs for digitized academic papers, books, information accompanying papers, research data, etc., and manages them together with the location information (URL) of the contents. It provides links to the full text of the articles held by publishers. If you are eligible to view the article, you can view the full text. Data from J-STAGE is included in JaLC papers, and J-STAGE Data included in research data, respectively. |
| 3 | JaLC | Jxiv | Articles | This service, operated by Japan Science and Technology Agency (JST), publishes pre-peer-reviewed papers (preprints) on an open-access basis. Preprints published on Jxiv are included as published papers in CiNii Research. |
| 4 | IRDB | Institutional Repository Database | Articles Data Dissertations OtherWorks |
IRDB is a database that collects and publishes the results of the members of Japanese universities and institutions. National Institute of Informatics (NII) provides IRDB, an integrated search service for institutional repositories in Japan. Articles, Data and Dissertations are included in CiNii Research under their respective data types, while others are included as OtherWorks. |
| 5 | IRDB | Japanese Agricultural Sciences Index | Articles | This is a digitized database that started in 1970. JASI incorporates journal information of articles published in approximately 500 domestic forestry and fisheries-related academic journals. Some articles have links to external. The article data is contained in IRDB. |
| 6 | IRDB | IPS Digital Library | Articles | IIPS Digital Library offers search and browse service for articles and research reports published by Information Processing Society of Japan. The article data is contained in IRDB. ※There are some paid contents. |
| 7 | IRDB | AIJ Archives | Articles | AIJI Archives offers search and browse service for articles and research reports published by Architectural Institute of Japan. The article data is contained in IRDB. ※There are some paid contents. |
| 8 | IRDB | Materials Data Repository | Data | This is a data repository operated by National Institute for Materials Science (NIMS) where you can search for research data and publications related to materials science. You can search using field-specific metadata. Incorporated via "IRDB - Institutional Repository Databas." |
| 9 | NDL Search | Japanese Periodicals Index | Articles | In collecting domestic publications by the National Diet Library, mainly academic journals, university bulletins and specialized journals, this is the largest domestic periodicals's index incorporating data every field such as Humanities/Social Sciences, Sciences/Technologies, and Medical Sciences/ Pharmaceutical Sciences. |
| 10 | NDL Search | ndl-article-online | Articles | CiNii Research includes article-level bibliographies from National Diet Library's Japanese Periodicals Index and Digital collections (e-books and e-magazines) as NDL Search. |
| 11 | NDL Digital Collections (NII-ELS) | National Diet Library Digital Collections | Articles | For publicly available contents from former NII-ELS service that has been migrated, CiNii Research includes it in as NDL Digital Collection (NII-ELS). |
| 12 | NACSIS-CAT/ILL | NACSIS-CAT/ILL Catalog Information Service | Books & Journals | NACSIS-CAT is the union catalog database created through an online cooperative shared cataloging system. It contains data on academic materials such as books and serials held by university libraries across the country. |
| 13 | KAKEN | Database of Grants-in-Aid for Scientific Research | Projects Articles Books Data |
KAKEN is a public database which archives the information on research projects funded by the Grant-in-Aid for Scientific Research of the Ministry of Education, Culture, Sports, Science and Technology (MEXT) and the Japan Society for the Promotion of Science (JSPS). It includes the initial data at the time of adoption (adopted projects), summaries of research (research-status reports, annual research reports, and final research report summaries), final research reports and self-evaluation reports. The articles, books and research data resulting from the project are registered as articles, books and research data, respectively. The Integbio Database Catalog is operated by National Bioscience Database Center (NBDC) at the Japan Science Technology Agency (JST). |
| 14-1 | OpenAIRE | OpenAIRE | Articles Data |
OpenAIRE is a research information infrastructure for open science built primarily in Europe, and is a non-profit partnership that collects and provides a wide range of research results. From the data provided by OpenAIRE, research results related to Japanese institutions or researchers affiliated with Japanese institutions are included. |
| 14-2 | OpenAIRE | DataCite | Data | DataCite is an international initiative on research data, promoted by the British Library (BL) and others to register DOIs for research data on the Internet.
Only the data included from other databases are displayed with a link to the corresponding research data in DataCite, using the data provided by DataCite. If you are eligible to view the research data in question, you can view the full text. ※New entries and updates to CiNii Research are currently suspended due to functional adjustments. |
| 15 | JDCat | JDCat | Data | JDCat is the abbreviation of “Japan Data Catalog for the Humanities and Social Sciences.” As a component of JSPS’s Program for Constructing Data Infrastructure for the Humanities and Social Science, this data catalog was created to allow the batch retrieval of metadata (e.g. the contents, contexts and sources of data sets) across fields of the humanities and social sciences. Metadata from the research institutions commissioned to operate this program can be retrieved in batches. |
| 16 | NINJAL | National Institute for Japanese Language and Linguistics | Articles Data |
The National Institute for Japanese Language and Linguistics (NINJAL) provides research data such as corpus. |
| 17 | IDR | The Informatics Research Data Repository | Articles Data |
The Informatics Research Data Repository (IDR) is a dataset sharing service operated by the Center for Dataset Sharing and Collaborative Research (DSC) of the National Institute of Informatics (NII). The IDR accepts various types of datasets from private companies, universities, and other researchers and provides them to researchers. |
| 18 | RUDA | Rikkyo University Data Archive | Data | RUDA is a social research data archive operated by the Center for Statistics and Information (CSI) of Rikkyo University. It collects, organizes and archives social research data, which are valuable public assets, and makes them widely available for research purposes such as academic secondary analysis and for educational use in the classroom. |
| 19 | Integbio | Integbio Database Catalog | Data | Integbio Database Catalog provides whereabouts information (URL), database description, biological species and other attributes (metadata) of Japanese and international life science databases to make it easier for users to find databases they need. This catalog has been developed as a part of the integration of life science databases promoted by four ministries in Japan: the Ministry of Education, Culture, Sports, Science, and Technology (MEXT), The Ministry of Health, Labor, and Welfare (MHLW), the Ministry of Agriculture, Forestry, and Fisheries (MAFF), and the Ministry of Economy, Trade, and Industry of Japan (METI). |
| 20 | Japanese public data catalog | Japanese Public Data Catalog | Data | Japanese Public Data Catalog is a search engine that provides a cross-search function for data catalogs supplied by local governments. The SIP NII consortium developed this search engine. |
| 21 | PubMed | PubMed | Articles | A searchable resource for biomedical and life science literature developed and maintained by National Center for Biotechnology Information (NCBI) at the U.S. National Library of Medicine (NLM) at National Institutes of Health (NIH). Links to the Information on the relevant paper in PubMed are displayed using data recorded in external databases included in CiNii Research. |
| 22 | LSDB Archive | Life Science Database Archive | Data | Life Science Database Archive is a service operated by National Bioscience Database Center (NBDC) of Japan Science and Technology Agency (JST) that allows users to search and download data sets produced by researchers in the life science field in Japan. |
| 23 | NIPR-ADS | ADS: Arctic and Antarctic Data archive System | Data | ADS is a database operated by Arctic Environment Research Center that collects and publishes a wide variety of collects observation data and modeling products obtained by various Japanese research projects.ADS develops analysis and visualization Web services for integrated Big Data. |
| 24 | NIPR-ScienceDB | National Institute of Polar Research (NIPR) Science Database | Data | This is a database operated by National Institute of Polar Research that publishes location information (metadata) in textual and numerical format regarding various scientific data obtained from research and survey activities in the polar regions, involving Antarctic research projects. |
| 25 | CiNii Articles | CiNii Articles | Articles | CiNii Articles is a database service which can search of information on academic articles published in academic society journals, university research bulletins or articles included in the National Diet Library's Japanese Periodicals Index Database and databases. It was integrated into CiNii Research on April 18, 2022. |
| 26 | CiNii Books | CiNii Books | Books & Journals | CiNii Books allows you to search for information on about 11.77 million academic materials, including books, journals, and classical books, held by more than 1,300 university libraries nationwide. |
| - | Nikkei BP | Nikkei BP Magazine Archive | Articles | Search service for journals published by Nikkei BP. Only incorporated data from other databases, links to the full-text documents and abstracts are displayed by using a data provided by Nikkei BP. The data was deleted at the end of June 2025. |
| - | IRDB, NDL Search | CiNii Dissertations | Dissertations | CiNii Dissertations is a service on which you can search for doctoral dissertations in Japan in an integrated and comprehensive manner. If the text of a doctoral dissertation is publicly available, you can view the full text by clicking on the link. |
Other data
| No | Database Code | Database Name | Data Type | Contents |
|---|---|---|---|---|
| - | － | Ichushi Web | Articles | Ichushi Web offers search service for domestic medical article information published by NPO Japan Medical Abstracts Society. It contains information on articles published in Japan in periodical publications in medicine, dentistry, pharmacy, nursing, and related fields. Only incorporated data from other databases, links to the article information of Ichushi Web are displayed by using a data provided by Japan Medical Abstracts Society. |
| - | － | Bibdata-EBook | Books & Journals | Bibdata-EBook is a service that shares the Japanese e-book metadata collected and integrated from Japanese e-book publishers etc. CiNii Research uses the e-book metadata for data collected from CiNii Books to display links to the full-text pages of e-books. |
| - | － | ERDB-JP | Books & Journals | ERDB-JP is an open knowledge base built collaboratively by partner institutions, accumulating data on electronic journals, ebooks, and other materials related to Japan. CiNii Research uses ERDB-JP for data included in Catalog Information Service (NACSIS-CAT/ILL) to display links to full-text pages. |
