Metadata basics for libraries

IST 523
March 5, 2008
Denise A. Garofalo
Topics to be covered

•   What is metadata?
•   What is Dublin Core?
•   What is syntax?
•   How are metadata used?
•   Se...
What is metadata?

•   (metadata is plural, like data)
•   quot;data about dataquot;
•   “information about information.”
...
Who..

• collected the data
• distributed the data
What...

• subject
• processing
• projection
When...

• data projected
Where...

• data collected
Why...

• collected
• [purpose]
How….

• collected
• should it be used
• much did it cost
In other words it describes

•   content
•   quality
•   condition
•   other characteristics of data
Metadata schemas

•   Dublin Core
•   AACR2
•   GILS
•   EAD
•   IMS
•   AGLS
Dublin Core
Dublin Core

• Popular metadata schema (element set)
• 15 broad categories
• widely used in libraries
Dublin Core elements

• Title
   – name
• Author/creator
   – person primarily responsible
• Subject/keyword
   – topics
Dublin Core elements

• Description
   – description of the contents
• Publisher
   – responsible for availability
• Other...
Dublin Core elements

• Date
  – date resource available
• Resource Type
  – category
• Format
  – data format of the reso...
Dublin Core elements

• Resource identifier
   – ID number
• Source
   – Where resource came from
• Language
   – of the i...
Dublin Core elements

• Relation
  – relationship
• Coverage
  – location and duration
• Rights Management
  – copyright n...
What is syntax?

• Not strictly part of schema
• Needed for processing
• Common syntax schemes are:
  –   HTML, SGML, XML
...
How are metadata used?

• embedded in a web page
• as a separate HTML document
• in a database
Web pages

• Simple
• Part of page creation
• <meta> tags
   – <title>
   – <META name=quot;Keywordsquot; content=quot;fir...
Search engines

• Functions
• History
Meta tags and search engines

• The introduction of the <META>
  element as part of HTML coding was,
  in part, an attempt...
Why?

• Search engines are proprietary in processing
  meta tags
Why use metadata?

• Systematic
• Access
Example
                         (Dublin Core)
• <HTML> !4.0!
  <HEAD>
  <TITLE> A Dirge </TITLE>
  <META NAME=quot;DC.Tit...
Example continued
•   Rough wind, that moanest loud
•   Grief too sad for song;
•   Wild wind, when sullen cloud
•   Knell...
Where is metadata stored?

• Embedded in a web page
• as a separate document
• in a database
How is metadata created?

• Tools
  – DC-dot - http://www.ukoln.ac.uk/metadata/dcdot/
  – DCmeta -
    http://www.dstc.edu...
Metadata creation

• Ideally with a purpose-built tool
• Keep from-scratch creation to a minimum
Resources

• The IFLA Metadata Resources page
  The most comprehensive guide to metadata resources
  available on the Worl...
Resources

• Making a MARC with Dublin Core
  By Jon Knight in issue 8 of Ariadne.
  <URL:http://www.ariadne.ac.uk/issue8/...
More resources

• Web4Lib Electronic Discussion
  An electronic discussion for library-based World-Wide
  Web managers.
  ...
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Session6

  1. 1. Metadata basics for libraries IST 523 March 5, 2008 Denise A. Garofalo
  2. 2. Topics to be covered • What is metadata? • What is Dublin Core? • What is syntax? • How are metadata used? • Search engines and metadata • Why use metadata?
  3. 3. What is metadata? • (metadata is plural, like data) • quot;data about dataquot; • “information about information.” • answers who, what, when, where, why, and how
  4. 4. Who.. • collected the data • distributed the data
  5. 5. What... • subject • processing • projection
  6. 6. When... • data projected
  7. 7. Where... • data collected
  8. 8. Why... • collected • [purpose]
  9. 9. How…. • collected • should it be used • much did it cost
  10. 10. In other words it describes • content • quality • condition • other characteristics of data
  11. 11. Metadata schemas • Dublin Core • AACR2 • GILS • EAD • IMS • AGLS
  12. 12. Dublin Core
  13. 13. Dublin Core • Popular metadata schema (element set) • 15 broad categories • widely used in libraries
  14. 14. Dublin Core elements • Title – name • Author/creator – person primarily responsible • Subject/keyword – topics
  15. 15. Dublin Core elements • Description – description of the contents • Publisher – responsible for availability • Other contributors – others who made contributions
  16. 16. Dublin Core elements • Date – date resource available • Resource Type – category • Format – data format of the resource
  17. 17. Dublin Core elements • Resource identifier – ID number • Source – Where resource came from • Language – of the intellectual content
  18. 18. Dublin Core elements • Relation – relationship • Coverage – location and duration • Rights Management – copyright notice, etc.
  19. 19. What is syntax? • Not strictly part of schema • Needed for processing • Common syntax schemes are: – HTML, SGML, XML – RDF – MARC – MIME
  20. 20. How are metadata used? • embedded in a web page • as a separate HTML document • in a database
  21. 21. Web pages • Simple • Part of page creation • <meta> tags – <title> – <META name=quot;Keywordsquot; content=quot;first, second, thirdquot;> – <META name=quot;Descriptionquot; content=quot;Your descriptionquot;>
  22. 22. Search engines • Functions • History
  23. 23. Meta tags and search engines • The introduction of the <META> element as part of HTML coding was, in part, an attempt to encourage search engines to extract and index more structured data, such as description and keywords
  24. 24. Why? • Search engines are proprietary in processing meta tags
  25. 25. Why use metadata? • Systematic • Access
  26. 26. Example (Dublin Core) • <HTML> !4.0! <HEAD> <TITLE> A Dirge </TITLE> <META NAME=quot;DC.Titlequot; CONTENT=quot;A Dirgequot;> <META NAME=quot;DC.Creatorquot; CONTENT=quot; Shelley, Percy Bysshequot;> <META NAME=quot;DC.Typequot; CONTENT=quot;textquot;> <META NAME=quot;DC.Datequot; CONTENT=quot;1820quot;> <META NAME=quot;DC.Formatquot; CONTENT=quot;text/htmlquot;> <META NAME=quot;DC.Identifierquot; CONTENT=quot; http://purl.org/DC/elements/1.0/quot;> </HEAD> <BODY><PRE>
  27. 27. Example continued • Rough wind, that moanest loud • Grief too sad for song; • Wild wind, when sullen cloud • Knells all the night long; • Sad storm, whose tears are vain, • Bare woods, whose branches strain, • Deep caves and dreary main, • - Wail, for the world's wrong! • </PRE></BODY> </HTML>
  28. 28. Where is metadata stored? • Embedded in a web page • as a separate document • in a database
  29. 29. How is metadata created? • Tools – DC-dot - http://www.ukoln.ac.uk/metadata/dcdot/ – DCmeta - http://www.dstc.edu.au/RDU/MetaWeb/generic_tool. html – HotMeta - http://www.dstc.edu.au/Research/Projects/hotmeta/
  30. 30. Metadata creation • Ideally with a purpose-built tool • Keep from-scratch creation to a minimum
  31. 31. Resources • The IFLA Metadata Resources page The most comprehensive guide to metadata resources available on the World Wide Web. <URL:http://www.ifla.org/II/metadata.htm> • Meta tags can index, organize your Web pages By Jeff Frentzen <URL:http://www8.zdnet.com/pcweek/ir/0113/13jia.html >
  32. 32. Resources • Making a MARC with Dublin Core By Jon Knight in issue 8 of Ariadne. <URL:http://www.ariadne.ac.uk/issue8/marc/> • META Tagging for Search Engines Describes the use of the <META> tag for specifying to search engines how the document to be indexed. <URL:http://WWW.Stars.com/Location/Meta/Tag.html>
  33. 33. More resources • Web4Lib Electronic Discussion An electronic discussion for library-based World-Wide Web managers. <URL:http://sunsite.berkeley.edu/Web4Lib/> • Metadata Glossary A draft metadata term maintained by Michael Day <URL:http://www.ukoln.ac.uk/metadata/glossary/>

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