Glossary—So many terms, so little time

       I have chosen the following definitions from Wikipedia because that site contained the most up-to-date and concise definitions I found. Hopefully, this glossary will help disambiguate the contents of this blog, especially to those unfamiliar with the library and information science field.

A folksonomy is a system of classification derived from the practice and method of collaboratively creating and managing tags to annotate and categorize content; this practice is also known as collaborative tagging, social classification, social indexing, and social tagging. Folksonomy is a portmanteau of folk and taxonomy. (http://en.wikipedia.org/wiki/Folksonomy)

In online computer systems terminology, a tag is a non-hierarchical keyword or term assigned to a piece of information (such as an internet bookmark, digital image, or computer file). This kind of metadata helps describe an item and allows it to be found again by browsing or searching. Tags are generally chosen informally and personally by the item's creator or by its viewer, depending on the system. (http://en.wikipedia.org/wiki/Tag_(metadata))

Taxonomy is the practice and science of classification. The word finds its roots in the Greek τάξις, taxis (meaning 'order', 'arrangement') and νόμος, nomos ('law' or 'science'). Taxonomy uses taxonomic units, known as taxa (singular taxon).

In addition, the word is also used as a count noun: a taxonomy, or taxonomic scheme, is a particular classification ("the taxonomy of ..."), arranged in a hierarchical structure. (http://en.wikipedia.org/wiki/Taxonomy)

In library and information science, authority control is the practice of creating and maintaining headings for bibliographic material in a catalog. Authority control fulfills two important functions. First, it enables catalogers to disambiguate items with similar or identical headings. For example, two authors who happen to have published under the same name can be distinguished from each other by adding middle initials, birth and/or death (or flourished, if these are unknown) dates, or a descriptive epithet to the heading of one (or both) authors. Second, authority control is used by catalogers to collocate materials that logically belong together, although they present themselves differently. For example, authority records are used to establish uniform titles, which can collocate all versions of a given work together even when they are issued under different titles. (http://en.wikipedia.org/wiki/Authority_control)

A bibliographic or library database is a database of bibliographic records. It may be a database containing information about books and other materials held in a library (e.g. an online library catalog, or OPAC) or, as the term is more often used, an electronic index to journal or magazine articles, containing citations, abstracts and often either the full text of the articles indexed, or links to the full text. (http://en.wikipedia.org/wiki/Bibliographic_database)