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An Introduction to MODS: The Metadata Object Description Schema

An Introduction to MODS: The Metadata Object Description Schema. Tech Talk By Daniel Gelaw Alemneh October 17, 2007. Background: Why create metadata?. Discover resources Identify resources Locate resources Bring resources together

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An Introduction to MODS: The Metadata Object Description Schema

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  1. An Introduction to MODS: The Metadata Object Description Schema Tech Talk By Daniel Gelaw Alemneh October 17, 2007

  2. Background: Why create metadata? • Discover resources • Identify resources • Locate resources • Bring resources together • Distinguish between/among similar and dissimilar resources • Record rights information • Ensure long-term access & preservation Tech Talk: October 17, 2007

  3. Approaches and Issues need to be considered • Level of description • Who will create metadata • Controlled vocabularies, Authority controls… • Presentation to users • Are you going to share it? • Interoperability • Rights information Tech Talk: October 17, 2007

  4. MODS Overview • Metadata Object Description Schema • Descriptive Metadata Standard • An XML schema designed to encode descriptive metadata for digital objects • Developed at LC; Network Development and MARC Standards Office (version 3.3) • Originally designed for library use; may be used for other applications • Derived from MARC Tech Talk: October 17, 2007

  5. MODS Development • XML increasingly used for markup for the web • Investigating XML for MARC element set • Need for descriptive metadata in XML; • something simpler than MARC (with natural language element names instead of numerical field names) • more interoperable than qualified DC (but rich enough for complex digital objects) Tech Talk: October 17, 2007

  6. What is needed? • A standard for metadata content analogous to AACR2 • A standardized framework for holding and exchanging metadata: analogous to the MARC record Tech Talk: October 17, 2007

  7. MODS features and Advantages • Tags are language-based, not numeric (eg.100) • Elements are semantically parallel to MARC • Doesn't assume use of any particular rules • Element descriptions can be reused • Use of XML schema allows for flexblity; • Richer than Dublin Core • (not too rich as UNTL Metadata, though) • Hierarchical; • (supports rich description and works well UNTL) Tech Talk: October 17, 2007

  8. MODS Elements • 1. Title Info • 2. Name • 3. Type of resource • 4. Genre • 5. Origin Information • 6. Language • 7. Physical description • 8. Abstract • 9. Table of contents • 10. Target audience Tech Talk: October 17, 2007

  9. MODS Elements • 10. Target audience • 11. Note • 12. Subject • 13. Classification • 14. Related item • 15. Identifier • 16. Location • 17. Access conditions • 18. Part • 19. Extension • 20. Record Info Tech Talk: October 17, 2007

  10. Crosswalks • Issues in converting existing records to MODS: • Multiple elements are indicated for a single MODS element • Conversions without some loss of data could be difficult • MARC to MODS • MODS to MARC • Dublin Core (simple) to MODS • UNTL to MODS Tech Talk: October 17, 2007

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  13. But will MODS catch on? • Backed by Library of Congress • Interest from Libraries’ community • 25 implementers • There are more established competitors out there, • Dublin Core, UNTL Metadata, etc. • It might be difficult for MODS to make big impact today (for all communities). However, MODS offers exciting possibilities for the digital library! Tech Talk: October 17, 2007

  14. Useful addresses MODS • http://www.loc.gov/standards/mods/ METS • http://www.loc.gov/standards/mets/ UNTL to MODS • http://www.library.unt.edu/digitalprojects/assets/files/metadata/mapping/UNTL-MODS.pdf Tech Talk: October 17, 2007

  15. . Tech Talk: October 17, 2007 Thank you!

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