What is metadata?

Metadata is data about data. In other words, it is information about a resource used to describe, manage, and retrieve it. This includes

• information about how, when, and by whom a document or digital object was created
• the subject content
• restrictions on access or use, including copyright.

Clinical education metadata

• ALEX and HEAL

Subject terminology

• General medical terminology (UMLS, MeSH, SNOMED CT, JAMA topic collections)
• Mental health
• Nursing
• Medical coding schemes
• Other: HIV/AIDS, Maternal and Child Health, Pharmacology, Public Health