Thank you for visiting the “eScience Portal for Librarians.” The “eScience Portal” is no longer being maintained by the University of Massachusetts. This regional resource has been adapted by the National Network of Libraries of Medicine, and is sustained by the network of regional medical libraries across the country. Please visit https://nnlm.gov/data for up-to-date data services and resources supported and vetted by the National Libraries of Medicine. We look forward to your continued involvement in the programming in the New England Region and beyond. If you have questions, please contact Mary.Piorun@umassmed.edu.

Data Dictionary

Data Dictionary
Definition: 

A data dictionary is a centralized repository that provides information about specific data such as meaning, relationships to other data, origin, usage, and format. A data dictionary stores metadata that defines and describes data so that it can be easily understood by anyone who would like to use it or analyze it at a later date. Librarians can assist in building data dictionaries for researchers by working closely with them at the onset of a new research project. The data dictionary – if started at the beginning of a research lifecycle – can assist in the management of research data from the beginning of data capture to the completion of a research study. For example, a data dictionary would be used to define each descriptive heading used when gathering quantitative data as part of a research study.