Data repositories

A data repository can be defined as a place that holds data, makes data available to use, and organizes data in a logical manner. A data repository may also be defined as an appropriate, subject-specific location where researchers can submit their data. Data repositories may have specific requirements concerning subject or research domain; data re-use and access; file format and data structure; and the types of metadata that can be used. 

National Library of Medicine:  https://nnlm.gov/data/thesaurus/data-repository 

 

A data repository is a large database infrastructure —  several databases — that collect, manage and store data sets for data analysis, sharing (publishing) and preserving.

Digital Object Identifier

A DOI, or Digital Object Identifier, is a string of numbers, letters and symbols used to permanently identify an article or document and link to it on the web. A DOI will help your reader easily locate a document from your citation. Think of it like a Social Security number for the article you’re citing — it will always refer to that article, and only that one. While a web address (URL) might change, the DOI will never change.

Source:  https://library.uic.edu/help/article/1966/what-is-a-doi-and-how-do-i-use-them-in-citations

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