Download - Virtusales ebook metadata
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What is an e-book?• A distributable digital version of a book
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An industry standard
Maintained by the International Digital Publishers Forum (IDPF)
What is ...
Zip file consisting of:OCFOPFOPS
For more information, see http://idpf.org/epub/
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Inside an EPUB
... and so on, one html file for each chapter ...
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Inside OPF file (metadata)
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Metadata• Often defined as ‘data about data’• A metadata record is a set of attributes or
elements necessary to describe the resource• Metadata predates digital publishing, but it’s
become crucial for digital information retrieval• E-book metadata involves both the data
embedded in the EPUB file and the data that is held separate from the book (e.g., library catalogue, ONIX feeds for retail venders, etc.)
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Why is metadata important?
• discoverability• delivers info needed to supply chain, incl.
online retail• feeds internal information systems• automates loading product information to
customer facing systems• puts publisher, not retailer in control• lower risk of error• time and labour saving
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ONIX • ONline Information eXchange• an international standard• an XML file• a communications protocol (i.e. computer to
computer communication), not a data model• captures metadata• managed by an international steering
committee of user group representatives• For more information see
http://www.editeur.org/
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ONIX fields
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Dublin Core• addresses the need to standardise descriptive metadata• describes books, digital materials, and composite media
like webpages• an ISO standard maintained by the Dublin Core
Metadata Initiative (DCMI)• its goals are:• simplicity of creation and maintenance• commonly understood semantics• international scope• extensibility
• for more information see http://dublincore.org/
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Dublin Core elementsSimple Dublin Core Metadata Element Set
(DCMES) consists of 15 metadata elements:
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EPUB 2 and EPUB 3• as yet, no hardware support for EPUB3• metadata in EPUB 3 much better• publishers will be able to stop sending a
separate metadata file to suppliers• only one store of metadata means half the
scope for errors• the meta element is greatly enhanced• link element that allows you to reference
metadata by url
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Linking books via metadata
http://www.bookcountry.com/books/Map/Defa
ult.aspx
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Summary• metadata can be internal (OPF) and external
(ONIX)• important for discoverability, tracking and
automation• most retailers request ONIX feeds• EPUB standard is Dublin Core• EPUB3 metadata is more useful than EPUB2 and
may make separate ONIX feeds redundant• future metadata uses will augment discoverability
using genre and subject fields, for e.g.