Understanding Metadata: Using Dublin Core

By Diane Hillman, Dublin Core Metadata Initiative

What is Metadata?

Metadata has been with us since the first librarian made a list of the items on a shelf of handwritten scrolls. The term “meta” comes from a Greek word that denotes “alongside, with, after, next.” More recent Latin and English usage would employ “meta” to denote something transcendental, or beyond nature. Metadata, then, can be thought of as data about other data. It is the Internet-age term for information that librarians traditionally have put into catalogs, and it most commonly refers to descriptive information about Web resources.

A metadata record consists of a set of attributes, or elements, necessary to describe the resource in question. For example, a metadata system common in libraries—the library catalog—contains a set of metadata records with elements that describe a book or other library item: author, title, date of creation or publication, subject coverage, and the call number specifying location of the item on the shelf.

The linkage between a metadata record and the resource it describes may take one of two forms:

Filed under: Metadata : Technical Writing