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The Mendeley research catalog is a crowdsourced database of research documents. Researchers have uploaded nearly 100M documents into the catalog with additional contributions coming directly from subject repositories like Pubmed Central and Arxiv.org or web crawls. Free Mendeley [98] Merck Index: Chemistry, Biology, Pharmacology: Also available ...
This is a list of online databases accessible via the Internet. A. Abandoned & Little-Known Airfields ... Internet Off-Broadway Database; Internet Public Library;
The online public access catalog (OPAC), now frequently synonymous with library catalog, is an online database of materials held by a library or group of libraries. Online catalogs have largely replaced the analog card catalogs previously used in libraries.
Leuven Database of Ancient Books; LexisNexis; Library and Information Science Abstracts; Library Hub Discover; Library Literature and Information Science; Library, Information Science & Technology Abstracts; List of academic databases and search engines; Literary Research Guide; Live Search Academic
Some people still informally refer to the online catalog as a "card catalog". [2] The largest international library catalog in the world is the WorldCat union catalog managed by the non-profit library cooperative OCLC. [3] In January 2021, WorldCat had over half a billion catalog records and three billion library holdings. [4] Card catalog at Yale
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The database includes other information sources in addition to member library collections. [6] OCLC makes WorldCat itself available free to libraries, but the catalog is the foundation for other subscription OCLC services (such as resource sharing and collection management). WorldCat is used by librarians for cataloging and research and by the ...
A database catalog of a database instance consists of metadata in which definitions of database objects such as base tables, views (virtual tables), synonyms, value ranges, indexes, users, and user groups are stored. [1] [2] It is an architecture product that documents the database's content and data quality. [3]