Archives hub ead 2010_lesson


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  • Talk about exchange of information – need to agree rules – DTD/schemas
  • Key UKAD partners: Access 2 Archives, Archives Hub, AIM25, Archives Wales, Genesis, Janus, National Register of Archives, Scottish Archives Network, A Vision of Britain
  • Archives hub ead 2010_lesson

    1. 1. Lisa Jeskins and Bethan Ruddock Archives Hub Mimas
    2. 2. By the end of today’s session we will have given you an introduction to: • XML • EAD • EAD Editor
    3. 3.  XML = Extensible Markup Language  XML is a system for creating languages: ◦ Or a meta-language  Use XML to design your own markup language, consisting of meaningful tags that describe the data they contain  Create a language for describing…anything
    4. 4.  the ability to exchange/share data  provides advantages of cross-searching, so user can easily search across and retrieve resources from a variety of different systems  allows users to move beyond individual websites for individual resources  integrates information resources presented in different formats  XML facilitates interoperability
    5. 5.  XML does not do anything itself. It is pure information wrapped in XML tags  You must use other means to send, receive or display the data XML XML technologies is used by to create Detailed description to view in a browser Summary entry to view in a browser PDF for print
    6. 6.  XML is not about content, though there might be certain restrictions on content  XML is essentially about structure  Creating a consistent structure via XML tagging enables content to be easily identified (by machines) and used in different ways
    7. 7. <title> Alice in Wonderland </title> *XML allows you to define your tags* <book>Alice in Wonderland</book> <filmtitle>Alice in Wonderland</filmtitle> <tag> content </tag>
    8. 8. Title Alice in Wonderland Author Lewis Carroll Extent 1 volume Format hardback
    9. 9. <books> <title>Alice in Wonderland</title> <author>Lewis Carroll</author> <extent>1 volume</extent> <format>hardback</location> </books>
    10. 10.  Valid XML provides consistency and facilitates the exchange of data  Valid XML is important for displaying, processing and exchanging XML in a wider environment  a root element is required <catalog> …..all your tags and content… </catalog>  closing tags are required  case matters
    11. 11.  elements must be properly nested <physdesc> <extent>10 boxes</extent> </physdesc> <physdesc> <extent>10 boxes</physdesc> </extent>
    12. 12.  Look at the album information on your sheet of paper  In pairs, create xml tags for the information that you see  e.g. ◦ <title></title>, <albumtitle></albumtitle> ◦ <artist></artist>, <singer></singer>, <band></band>  10 mins to create tags  5 mins to feedback
    13. 13. <catalog> <cd> <title>Lungs</title> <artist>Florence and the Machine</artist> <genre>indie</genre> <year>2009</year> </cd> <cd> <title>Slash</title> <artist>Slash</artist> <genre>rock</genre> <year>2010</year> </cd> </catalog>
    14. 14.  A Document Type Definition or Schema defines the building blocks of an XML document  It specifies elements and attributes and defines how they can be used  People can agree to use a common DTD/Schema for interchanging data
    15. 15. XML file DTD or Schema Valid XML Blue Elephant Papers …………………… ………… Blue Elephant Papers Browse List
    16. 16.  International standard, supported by the W3C  Open, licence free and platform neutral  Human and machine readable  Hierarchical structure (good for archive descriptions)  Can be used for data exchange ◦ XML is the main basis for defining data exchange languages ◦ Meaningful tags facilitate extraction – data can be manipulated as required  Government mandates XML for data exchange (e-GIF)  XML has been widely adopted commercially as well as in the public sector
    17. 17.  EAD = Encoded Archival Description  EAD is XML for finding aids  A data structure standard – not a content standard  EAD Working Group (EADWG)
    18. 18.  Allows finding aids to be indexed, searched, retrieved and navigated  Compatible with ISAD(G)  Flexible enough to deal with all types of finding aids ◦ single or multi-level, long or short, lists or calendars etc.  Can create new finding aids as well as converting old ones to standardised form  Can share data between systems
    19. 19. <ead> <eadheader> </eadheader> <archdesc> <did></did> </archdesc> </ead>
    20. 20. <ead> EAD root element <eadheader> EAD file information wrapper </eadheader> <archdesc> Finding aid wrapper <did></did> Core collection information wrapper </archdesc> </ead>
    21. 21. <archdesc> <eadheader> <did> sub-fonds descriptions
    22. 22. <archdesc level="fonds"> <did> <unitid>GB 0001 Foster</unitid> <unittitle>Papers of Dr Foster</unittitle> <unitdate normal = "1820-1833">1820-1833</unitdate> <repository>University of Gloucestershire</repository> <physdesc> <extent>1 box</extent> <physfacet>Four folders of letters, 230 folios</physfacet> </physdesc> <langmaterial><language langcode=“eng”>English<language> </langmaterial> <origination>Dr Foster</origination> </did>
    23. 23.  EAD version 1 DTD  EAD 2002 DTD  EAD 2002 Schema  Available from  Human-readable version: EAD Tag Library (Society of American Archivists)
    24. 24.  Library of Congress Official EAD site:  Tag Library:  EAD Roundtable Help Pages:
    25. 25.  It is XML, which is an international standard  It is a simple and effective way of structuring content and providing meaning  Machines can manipulate the content in all sorts of ways  It is a great format to store finding-aids
    26. 26.  Not many UK archives currently using EAD as a storage format  EAD will increasingly be used as an export format from proprietary database systems like CALM, for use in XML-based gateways such as Aim25 and the Archives Hub  New software becoming available all the time, which makes it easier to create, search and display XML – much of this is open source and often free
    27. 27.  Effective cross-searching requires: ◦ Interoperability  which requires ◦ Common standards
    28. 28.  Differences in how EAD is used  Encourages interoperability but still requires work to ensure seamless cross-searching  EAD is flexible and includes a large number of tags which has advantages and disadvantages
    29. 29.  XML is an international standard for sharing information  EAD is the XML language for archival finding aids  EAD is not a content standard  EAD will become increasingly important