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Term: Metadata

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Term: Metadata

Information about an analog or digital object, a component of an object, or a coherent collection of objects. Metadata describing digital content is often structured (e.g., with tagging or markup) and it may be embedded (Metadata, embedded) within a single file, incorporated within the "packaging" that is associated with a group of files (e.g., METS), placed in a related external file (e.g., XMP sidecar file), or in a system external to the digital file (e.g., a database) to which the digital file or files are linked via a unique key or association.
Definitions from a digital library perspective, from the Harvard University library
Metadata tutorial from Cornell University Library preservation program
See also:
Exif; IPTC Metadata; Metadata, administrative; Metadata, descriptive; Metadata, embedded; Metadata, file characteristics; Metadata, preservation; Metadata, process; Metadata, rights; Metadata, source; Metadata, structural; Metadata, technical; TIFF Header