This document discusses standards and metadata. It defines a standard as a document that provides requirements to ensure materials are fit for their purpose. Metadata is defined as "data about data" that describes other data. The document outlines several important metadata standards like Dublin Core, MARC, EAD, MODS and RDF. It provides details on the purpose and specifications of these standards, noting they are used to enhance accessibility, discovery and preservation of information.

1. M.l.i.sc 3rd sem
Central university of Gujarat

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 What is standards
Why use existing standards
 what is Metadata
Why is Metadata Important
 Types of metadata
 Examples of metadata standards
 dublin core ,MARC ,EAD ,MODS ,RDF
MITS.

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A standard is a document that provides requirements, specifications, guidelines or characteristics that can be used consistently to ensure that materials, products, processes and services are fit for their purpose.

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Cost saving
Access to help and advice
Usability
Resource discovery
Sustainability

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―Data about data‖
a set of data that describes and gives information
about other data.
 Metadata answer who, what, when, where,
why, and how about every facet of the data
that are being documented

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Increased accessibility
Ability for different systems to talk to one
another
Expanding use
Multi-versioning
Preservation
Cost considerations

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5 types of metadata:
Descriptive – Title, author, topic, etc.
Administrative – Record number, record date, etc.
Technical – File size, software needed, etc.
Rights – Copyright ownership, etc.
Management – typically by/for owning agency
(Price paid, circulation restrictions, etc.)

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MARC21 Formats--Representation and communication of descriptive metadata about information items
ISO 2709-based metadata communications protocol
International standard (maintained by LC)
Well-maintained, mature standard
Widely adopted by library communities
Field/record size limitations
No ability to embed related objects (e.g. book cover GIF)
Limited ability to convey hierarchical/complex relationships
Narrow focus on cataloging

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MODS (Metadata Object Description Standard)—XML markup language for selected data from MARC21 records as well as original resource description
Richer than Dublin Core; library-oriented XML metadata schema
 Can accommodate AACR2 standards
Maintenance agency: Library of Congress
Well-suited as a metadata format for OAI harvesting
MARC21 readily converts to MODS; however, cannot readily do a reverse conversion of MODS to MARC21
Community best practice guidelines would enhance usefulness

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EAD (Encoded Archival Description)—XML markup design for encoded finding aids using Standard Generalized Markup Language
EAD header carries metadata for finding aid
Standard maintained by LC along with SAA
suited for archival description
Provides simple or complex mark-up design to support varying levels of indexing
Needs help at the item level

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Dublin Core – Metadata element set (for description of digital objects)
Maintenance agency: Dublin Core Metadata Initiative (DCMI) hosted by OCLC Research
Achieve international standardization (ISO 15836)
Intended for use by both non-catalogers and specialists
No MARC tags used with Dublin Core metadata
Worldwide adoption (DCMES translated into 20+ languages)
No consistency across different projects using Dublin Core
Documentation for Dublin Core not well-defined

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Metadata Encoding and Transmission Standard (METS)
A standard ―shell‖ for encoding data essential for retrieving, preserving, and serving up digital resources
Six modules define descriptive, administrative, structural, rights and other metadata
Some parts of a METS object may be external (e.g., a MODS record for the descriptive metadata)
Maintenance agency: Library of Congress

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Resource Description Format (RDF)
RDF provides interoperability between applications that exchange machine-understandable information on the Web
Designed to convey metadata for machine consumption (raw RDF is not very human-readable)
A subject of debate (typically RDF vs. XML)!
Fundamental building block of RDF is the triple (subject + predicate + object)
Maintained by the W3C; RDF specification under revision

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Thank You !!!