Metadata specifications in context

From the TC 372 Workshop Compendium

Metadata, as the name implies, is data about data. In current usage of the term, the meaning of data is not restricted to digitally encoded information, but can be almost anything.

From: http://dublincore.org/workshops/dc1/.

The concept of metadata became popular about 15 years ago when it was realised that the emerging World Wide Web with all of its digital objects would need some equivalent to catalogue records. The ensuing development took a different course, however, with free text search engines becoming the major catalogues to the Web. Realising that many digital objects are non-textual and that even a text document is often a poor description of itself, the interest in metadata continued and has increased considerably over the past few years.

From: Hinrichs' Halbjahreskatalog, 204. Fortsetzung, erstes Halbjahr 1900, Leipzig: Hinrichs, 1900. p.215.

Metadata has been produced for centuries. Usually referred to as catalogues, some collections of metadata have become huge and complex works long before the advent of computers. Cataloguing rules had to reflect this complexity, leading to an ever increasing number of clauses and directives.

Frame from: Alle Kennis van de wereld. Directed by Ijsbrand van Veelen. VPRO (Hilversum), 1998.

Today's metadata, particularly that in the cultural heritage domain, still often resembles the paper-based catalogue. One card for each item in the collection. This legacy lives on, even in some of the most recent metadata specifications.

by Detlev Balzer, 2004.

Plenty of metadata is produced by machines. Embedding metadata in the medium ensures that it does not get lost (as long as the medium remains intact). Philosophical question: To what extent is embedded metadata part of the work? Is a painter's signature a part of the image? If it is, what if the image is signed on the back of the canvas?

Photo by Detlev Balzer, 2010.

Some would also subsume this under the concept of metadata. This label is clearly about something. Its use and its content schema is even mandated by law. Assuming that fashion is not a primary business of film archives, we will henceforth narrow our focus on metadata about cultural heritage items in general, and audiovisual artefacts in particular.