Match the Digital Library Standards with their respective purpose.

LIST - I (Digital library standard)		LIST - II (Purpose)
A.	Dublin Core	I.	Digital Object Packaging
B.	OAI - PMH	II.	Persistent Identification
C.	METS	III.	Metadata Description
D.	DOI	IV.	Data Harvesting

Choose the correct answer from the options given below:

The Correct answer is A - III, B - IV, C - I, D - II.

Key Points

• Dublin Core:
  • Dublin Core is a metadata standard used for describing electronic resources such as web pages, images, videos, and other online documents.
  • It provides a set of simple and standardized elements for invariably describing resources, making them more easily accessible and understandable to both humans and machines.
  • The Dublin Core Metadata Initiative (DCMI) is responsible for maintaining and promoting this standard.
  • Dublin Core is an initiative to create a Digital Library Card Catalogue for the web.
  • Dublin Core Metadata is a set of 15 core elements.
  • The Qualified Dublin Core, which was replaced by the DCMI Metadata Terms in 2008, aimed to enhance the original 15 Dublin Core Metadata Element Set (DCMES) terms through an ongoing process of expansion and refinement.
• OAI - PMH:​
  • The Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH) is a protocol developed to harvest metadata descriptions of records in an archive, enabling the creation of services using metadata from various archives.
  • OAI-PMH, commonly referred to as the OAI Protocol, uses XML over HTTP and requires support for representing metadata in Dublin Core format, with the option to support additional representations.
  • In the late 1990s, Herbert Van de Sompel convened a meeting with researchers and librarians to address interoperability challenges faced by e-print servers and digital repositories.
  • This meeting led to the development of the "Santa Fe Convention," defining an interface for structured metadata exposure.
  • Subsequent workshops highlighted shared challenges across various sectors, leading to the establishment of the Open Archives Initiative (OAI).
  • OAI-PMH version 1.0 was introduced in 2001, with subsequent versions refining the protocol.
• METS:
  • ​It stands for "Metadata Encoding & Transmission Standard".
  • METS scheme is a standard for encoding descriptive, administrative, and structural metadata regarding objects within a digital library.
  • It is maintained by METS board in collaboration with Network Development and MARC standard office of the Library of Congress.
• DOI:
  • A Digital Object Identifier (DOI) is a unique identifier standardized by ISO for various objects.
  • It's a part of the Handle System and fits within the URI system.
  • A Digital Object Identifier (DOI) is a unique alphanumeric string assigned to digital documents, primarily used to provide a persistent link to an online resource.
  • DOIs are extensively used to identify academic, professional, and government information, including journal articles, research reports, data sets, and official publications.
  • They've also been applied to identify other resources like commercial videos.
  • A DOI is a Handle System handle with two parts, a prefix, and a suffix, separated by a slash.