Metadata

Our responsibility to better data and data discovery

 

Maricris Nonato

SEASONED RoR DEVELOPER /

IT MANAGER

 
 
 
@maricris_sn

what is metadata?

What it is:

  • Data about THE data

  • It can be descriptive, structural or administrative

  • It may apply to an item or a collection of items

  • Some are embedded, while some are linked

  • Audience also defines metadata to be classified as human-readable vs machine-readable

  • Most importantly, it can be described in a way that can be controlled or uncontrolled

How do you describe/define things?

  • Use a dictionary!

  • Use relationships!

How do you describe/define things?

  • Use a dictionary!

  • Use relationships!

How do you describe/define things?

  • Use a dictionary!

  • Use relationships!

Thesauri Examples

Enter schemas

Dublin Core Metadata Schema

http://dublincore.org/documents/dces/

Understanding the play between the famous acronyms

XML

HTML

RDF

html and xhtml are variations of xml

Xml (and its flavors) can be described by DTDs

resource description framework

Triples in RDF

General standards available

  • Darwin Core - body of standards for biological diversity
  • CDWA - categories for description of works of art
  • AAT - art and architecture thesaurus
  • TGM - thesaurus for graphic materials
  • TGN - thesaurus for geographic names
  • EXIF - exchangeable image file format

Other interesting standards to use

Your mission, should you choose to accept it..

Is to make more data discoverable, reusable, more meaningful and contributing to the growth of the semantic web by properly using metadata.

deck

By Maricris Nonato