Metadata Encoding and Transmission Standard (METS)

1. Metadata Encoding and Transmission Standard
Sandip Das
MS-LIS 2013-2015
Documentation Research And Training Centre (DRTC)
Indian Statistical Institute
Bangalore Centre

2. Overview
Introduction
Characteristics of METS
Sections of a METS
Current Users
Conclusion
Feb 19, 2014
Sandip Das, DRTC, Indian Statistical Institute
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3. Introduction
Characteristics of METS
Sections of a METS
Current Users
Conclusion
Feb 19, 2014
Sandip Das, DRTC, Indian Statistical Institute
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4. Metadata ?
 Data about data
 Metadata is structured information
 Metadata can be used to find, gather, and maintain resources
over long periods of time.
Feb 19, 2014
Sandip Das, DRTC, Indian Statistical Institute
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5. METS ?
 Metadata Encoding and Transmission Standard
 A metadata standard for encoding descriptive, administrative,
and structural metadata regarding objects within a digital
library, expressed using the XML language of the World Wide
Web Consortium.
 Produced by LC and DLF
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Sandip Das, DRTC, Indian Statistical Institute
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6. XML?
 An ISO standard
 Interchangeable with other
applications
 Easy to integrate
cataloguing
information with text
transcription, images etc.
 Handles structural metadata
easily
Source : www.allzonedigital.com
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Sandip Das, DRTC, Indian Statistical Institute
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7. Why We Use ?
 All metadata format (like DC, EAD, VRA) utilize for bibliographic
description.
 METS act as a container object for the many piece of metadata
needed to describe a single digital object.
 A number of pieces of metadata are attached to each digital
object.
 METS provides a method for building the object (i.e. metadata,
attached items etc.) together so they can be transferred.
Feb 19, 2014
Sandip Das, DRTC, Indian Statistical Institute
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8. Introduction
Characteristics of METS
Sections of a METS
Current Users
Conclusion
Feb 19, 2014
Sandip Das, DRTC, Indian Statistical Institute
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9. Characteristics
 Generally one METS file corresponds to one digital object (which may
incorporate many files)
 All metadata encoded in single document
 Each type is held in a separate section, linked by identifiers
 All metadata and external data (eg. images, text, video) is either
referenced from METS file or can be held internally
Feb 19, 2014
Sandip Das, DRTC, Indian Statistical Institute
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10. Introduction
Characteristics of METS
Sections of a METS
Current Users
Conclusion
Feb 19, 2014
Sandip Das, DRTC, Indian Statistical Institute
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11. HOW TO BUILD A METS DOCUMENT
METS
Header
Struct. Map
Admin MD
File Sec.
Struct. Link
Descrip. MD
Behaviors
Image Source : http://www.slideshare.net/Annie05/mets-short-overview-context-presentation
Feb 19, 2014
Sandip Das, DRTC, Indian Statistical Institute
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12. METS Header
The METS Header contains metadata describing the METS
document itself, including such information as creator,
editor, etc.
Image Source : www.loc.gov/standards/mets/presentations/METS.ppt
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Sandip Das, DRTC, Indian Statistical Institute
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13. METS Header(Contd.)
<metsHdr CREATEDATE="2003-07-04T15:00:00" RECORDSTATUS="Complete">
<agent ROLE="CREATOR" TYPE="INDIVIDUAL"> <name>Jerome
McDonough</name> </agent> <agent ROLE="ARCHIVIST" TYPE="INDIVIDUAL">
<name>Ann Butler</name> </agent> </metsHdr>
Image Source : www.loc.gov/standards/mets/presentations/METS.ppt
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Sandip Das, DRTC, Indian Statistical Institute
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14. Descriptive Metadata
Can record all of the units of descriptive metadata pertaining to the digital
entity represented by METS document
– Descriptive Metadata may be
– External to the METS document
– Internal to the METS document
Image Source : www.loc.gov/standards/mets/presentations/METS.ppt
Feb 19, 2014
Sandip Das, DRTC, Indian Statistical Institute
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15. External Descriptive Metadata (Contd.)
External Descriptive metadata element in a METS document
may simply identify the type of descriptive metadata it
represents (MARC, EAD, etc), and point to this metadata in
its external location via a URI Descriptive Metadata
Image Source : www.loc.gov/standards/mets/presentations/METS.ppt
Feb 19, 2014
Sandip Das, DRTC, Indian Statistical Institute
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16. External Descriptive Metadata (Contd...)
<dmdSec ID="dmd001"> <mdRef LOCTYPE="URN"
MIMETYPE="application/xml" MDTYPE="EAD" LABEL="Berol Collection
Finding Aid">urn:x-nyu:fales1735</mdRef> </dmdSec>
Image Source : www.loc.gov/standards/mets/presentations/METS.ppt
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Sandip Das, DRTC, Indian Statistical Institute
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17. Internal Descriptive Metadata
 Internal descriptive metadata may be recorded internally in a METS
document in one of two ways
– As XML data using vocabulary and syntax specified in external XML
standard. For example, Dublin Core, MARC, MODS.
– As binary data. For example, a standard MARC record could simply be
incorporated as binary data into METS document.
Image Source : www.loc.gov/standards/mets/presentations/METS.ppt
Feb 19, 2014
Sandip Das, DRTC, Indian Statistical Institute
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18. Internal Descriptive Metadata (Contd…)
<dmdSec ID="dmd002"> <mdWrap MIMETYPE="text/xml" MDTYPE="DC" LABEL="Dublin Core
Metadata">
<xmlData> <dc:title>Alice's Adventures in Wonderland</dc:title> <dc:creator>Lewis Carroll</dc:creator>
<dc:date>between 1872 and 1890</dc:date> <dc:publisher>McCloughlin Brothers</dc:publisher>
<dc:type>text</dc:type> </xmlData> </mdWrap> </dmdSec> <dmdSec ID="dmd003"> <mdWrap
MIMETYPE="application/marc" MDTYPE="MARC" LABEL="OPAC Record">
<binData>MDI0ODdjam0gIDIyMDA1ODkgYSA0NU0wMDAxMDA...(etc.) </binData> </mdWrap>
</dmdSec>
Feb 19, 2014
Image Source : www.loc.gov/standards/mets/presentations/METS.ppt
Sandip Das, DRTC, Indian Statistical Institute
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19. Administrative metadata
This elements contain the administrative metadata pertaining to the files comprising a
digital library object, as well as that pertaining to the original source material used to
create the object. There are four main forms of administrative metadata provided for
in a METS document:
1. Technical Metadata (information regarding files' creation, format, and use
characteristics),
2. IPR Metadata (copyright and license information)
3. Source Metadata (descriptive and administrative metadata regarding the analog
source from which a digital library object derives)
4. Digital Provenance Metadata (information regarding source/destination
relationships between files)
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20. File Section
The file section lists all files containing content which comprise the electronic
versions of the digital object.
Feb 19, 2014
Sandip Das, DRTC, Indian Statistical Institute
Image Source : www.loc.gov/standards/mets/presentations/METS.ppt
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21. File Section(contd…)
File groups
Files are organized into File Groups
based on the grouping you would
like to do. One way is to group by
format (tiff, hi-res jpeg, med-res
jpeg, gif, etc)
Feb 19, 2014
Source:www.loc.gov/standards/mets/presentations/METS.ppt
Sandip Das, DRTC, Indian Statistical Institute
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22. File Section(contd…)
File
<file ID="FILE003" MIMETYPE="image/jpeg">
<Flocat LOCTYPE="URL">
http://dlib.nyu.edu/tamwag/beame.jpg
</FLocat>
</file>
Image Source : www.loc.gov/standards/mets/presentations/METS.ppt
Feb 19, 2014
Sandip Das, DRTC, Indian Statistical Institute
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23. Structural Map Section
The structural map is the heart of a METS document. It outlines a hierarchical
structure for the digital library object, and links the elements of that structure to
content files and metadata that pertain to each element.
Feb 19, 2014
Image Source : www.loc.gov/standards/mets/presentations/METS.ppt
Sandip Das, DRTC, Indian Statistical Institute
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24. Structural Map Section(Contd…)
<structMap TYPE="PHYSICAL">
<div ID="title1.div.1" LABEL="Chapter 1“
<div ID="title.1.div.1.1" LABEL="Section 1">
<fptr FILEID="title1.image.1"/>
<fptr FILEID="title1.image.2"/>
</div>
<div ID="title.1.div.1.2" LABEL="Section 2">
<fptr FILEID="title1.image.3"/>
</div>
</div>
<div ID="title1.div.2" LABEL="Chapter 2">
</div>
</structMap>
Feb 19, 2014
Sandip Das, DRTC, Indian Statistical Institute
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25. Structural Link Section
The Structural Links section of METS allows METS creators to record
the existence of hyperlinks between nodes in the hierarchy
outlined in the Structural Map. This is of particular value in using
METS to archive Websites.
Image Source : www.loc.gov/standards/mets/presentations/METS.ppt
Feb 19, 2014
Sandip Das, DRTC, Indian Statistical Institute
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26. Structural Link Section
<div ID="P1" TYPE="page" LABEL="Page 1">
<fptr FILEID="HTMLF1"/>
<div ID="IMG1" TYPE="image" LABEL="Image Hyperlink to Page 2">
<fptr FILEID="JPGF1"/>
</div>
<div ID="P2" TYPE="page" LABEL="Page 2">
<fptr FILEID="HTMLF2"/> </div>
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Sandip Das, DRTC, Indian Statistical Institute
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27. Behavior Section
A late addition to the METS standard, the behavior section allows
information to be recorded on how components of the digital
object should be rendered for the user, this may include
information on specific software packages to be used, or on
particular parameters to be used when rendering a file.
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28.  Introduction
 Characteristics of METS
 Sections of a METS
 Current Users
 Conclusion
Feb 19, 2014
Sandip Das, DRTC, Indian Statistical Institute
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29. Current users
– UC Berkeley (archival collections)
– Harvard (scanned print publications, e-journals)
– Library of Congress (audio/visual collections)
– EU Meta E project (historic newspapers)
– Michigan State (oral history collections)
– Univ. of Virginia (FEDORA digital objects)
– MIT (DSpace)
– RLG (RLG Cultural Materials)
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32. Introduction
Characteristics of METS
Sections of a METS
Current Users
Conclusion
Feb 19, 2014
Sandip Das, DRTC, Indian Statistical Institute
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33. Conclusion
• METS provides varied and flexible mechanisms for
– expressing structure or structures of a digital entity
– linking structure with simple and complex content
– linking structure with descriptive metadata
– linking structure and content files with administrative metadata
– linking behaviors with structure and content
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34. Reference
 METS official site:
http://www.loc.gov/standards/mets
 Wikipedia
http://en.wikipedia.org/wiki/METS
 UC Berkeley Library
http://ucblibrary4.berkeley.edu:8088/xdlib//calcultures/uci/mets
/cui_1_6_00004505.xml
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35. Image Source : www.cornwall.gov.uk
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