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Web Developer Resource Index: Metadata

Metadata is data that describes other data. It is a summary of, or an index into some larger document or other resource. Metadata is important on the WWW for one very simple reason: the sheer mass of information available has become overwhelming, making it difficult to find something relevant or useful.

This application is a perfect example of the use of Metadata. Each resource record in the list of results that appear when you visit a category consists of several pieces of metadata:

  1. the title of the resource.
  2. the URI, or address to access the resource.
  3. a short description of the resource.
  4. the author of the document.
  5. the date and time the record was last modified.

Other examples of Metadata include JPEG images, typically created by digital cameras. These binary files may contain any number of EXIF tags such as a description, the camera make and model, resolution, width and height in pixels, date and time, and more recently Geolocation information if the camera supports either an on-board GPS receiver or a port used to attach an external GPS device. Once this data is collected it can be converted into GeoURL tags that allow the user to pinpoint the location (and even the elevation) on a digital map.

Updated: Wednesday, October 29th, 2008 @ 1:53 AM EDT

Data Formats:Metadata {9}(5)[38]

Sub Categories

Navigation

Resources

Matching Tags

Indexes

§ A.Author
§ B.Best
§ D.Domain
§ F.Recent
§ G.Tag
§ H.Title

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Last updated: Wednesday, October 29th, 2008 @ 1:53 AM EDT [2008-10-29T05:53:45Z]   home

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