Planet Cataloging

September 23, 2016

Resource Description & Access (RDA)

RDA Core Elements

  • Definition of RDA Core Elements
  • Types RDA Core Elements
  • Examples of RDA Core Elements

Core Elements  Core elements in Resource Description & Access (RDA) are minimum elements required for describing resources. Core elements are a new feature of RDA which allowed for certain metadata elements to be identified as “required” in the cataloging process. The assignment of core status is based on attributes mandatory for a national level record, as documented in the FRBR/FRAD modules. At a minimum, a bibliographic description should include all the required core elements that are applicable. Core-ness is identified at the element level. Some elements are always core (if applicable and the information is available); some are core only in certain situations. Core elements are identified in two ways within RDA. The first is that all core elements are discussed in general, and listed as a group, in the sub-instructions of "RDA 0.6: Core Elements". In the separate chapters, the core elements are also identified individually by the label “CORE ELEMENT” at the beginning of the instructions for each element. They are clearly labeled in light blue at each core instruction in RDA Toolkit.  If the status of an element as core depends upon the situation, an explanation appears after the “Core element” label.

See, for example, this label for the core element for the title.
        2.3. Title
                CORE ELEMENT
             The title proper is a core element. Other titles are optional.

The Joint Steering Committee (JSC) for the development of RDA decided it would be preferable to designate certain elements as “core” rather than designating all elements as either “required” or “optional.” Decisions on core elements were made in the context of the FRBR and FRAD user tasks.
AACR2 provided three levels of bibliographic description. The first level, also known as minimal-level cataloging, contains, at least, the elements that basically identify the resource without providing and detailed description. The second level, also known as standard-level cataloging, provides all applicable elements to uniquely all copies for a manifestation. The third level represents full description and contains all elements provided in the rules that are applicable to the item being described. RDA does not define levels of description, instead, it identifies a number of elements as core elements. Core elements in RDA are similar to AACR2 minimal-level cataloging bibliographic description.

RDA Core Elements comprises elements that fulfill the user tasks of find, identify, and select. Only one instance of a core element is required. Subsequent instances are optional. For example, for the core element “Place of Publication” the RDA instruction states: “If more than one place of publication appears on the source of information, only the first recorded is required. If all the core elements (that are applicable) are recorded and a resource is still indistinguishable from another resource(s), then additional metadata is necessary. Additional metadata elements, beyond the core, are included based on the necessity for differentiation, policy statements, cataloger’s judgment, and/or local institutional policies. Catalogers should make a proper judgment about what additional elements or multiple values of a single element are necessary to make the catalog record understandable and the cataloged resource discoverable.

Types of Core Elements:
  • RDA Core: Required elements that are always core as prescribed in RDA
  • RDA Core if: Core, if applicable and Core, if the information is available
  • LC Core and LC-PCC Core: Core elements prescribed by LC and PCC in addition to RDA Core and RDA Core if. (Some other institutions also have their own set of core elements)
Examples of RDA Core Elements:

Statement of responsibility
Edition statement
Numbering of serials
  • 2.6.2 Numeric and/or alphabetic designation of first issue or part of sequence (for first or only sequence)
  • 2.6.3 Chronological designation of first issue or part of sequence (for first or only sequence)
  • 2.6.4 Numeric and/or alphabetic designation of last issue or part of sequence (for last or only sequence)
  • 2.6.5 Chronological designation of last issue or part of sequence (for last or only sequence)
  • For more details see: Numbering of Serials in RDA Cataloging
Production statement
Publication statement
Series statement
  • 2.12.2 Title proper of series
  • 2.12.9 Numbering within the series
  • 2.12.10 Title proper of subseries
  • 2.12.17 Numbering within subseries
Identifier for the manifestation
Carrier type
  • 3.3 Carrier type
  • 3.4 Extent (only if the resource is complete or if the total extent is known)

LC RDA CORE ELEMENTS (combination of RDA “Core” and RDA “Core if” elements plus additional elements)

Used for: RDA Core Elements

Glossary of Library & Information Science

All librarians and information professionals may use information from Glossary of Library & Information Science for their writings and research, with proper attribution and citation. I would appreciate it if you would let me know, too! Please cite as given below:

MLA: Haider, Salman. "Glossary of Library & Information Science." (2015)
Chicago: Haider, Salman. "Glossary of Library & Information Science." (2015)

See also:
Please provide us your valuable feedback in the Guest Book on Contact Us page to make Librarianship Studies & Information Technology Blog a better place for information on Library and Information Science and Information Technology related to libraries. Let us know your review of this definition of Core Elements. You can also suggest edits/additions to this description of Core Elements.

Thanks all for your love, suggestions, testimonials, likes, +1, tweets and shares ....

by Salman Haider ( at September 23, 2016 11:24 PM

September 22, 2016


Celebrating the first 500 WMS libraries


A decade of remarkable change

In 2006, four library system vendors dominated the integrated library system market. OCLC partnered with most and was just beginning to consider its own solution. In the intervening decade, we’ve seen a lot of consolidation and rapid innovation.

Fast-forward to 2016. The ILS is now a legacy system, “next-gen” is practically passé, and Marshall Breeding has dubbed a new breed of library management and discovery services the “Library Service Platform.” Today, OCLC’s WorldShare Management Services (WMS) is one of only two offerings in this space—a true multi-tenant, cloud-based suite of services for managing and discovering the purchased and licensed collections of libraries. It took only five years for OCLC to attract 500 libraries to WMS, becoming a leading provider in a space that it didn’t even occupy a decade ago.

That would be a major achievement in any industry, by any company. That it was achieved by a nonprofit library cooperative is credit to the unique power behind that success—our members.

Imagination + hard work = amazing

Earlier this week, we hosted a “WMS Global Community & User Group Meeting” in Dublin, Ohio. Members from 75 libraries and five countries gathered to talk about their WMS experiences. They shared insights with each other, talked about best practices and provided feedback to OCLC staff. You can see photos and tweets from the event at #WMSglobal.

Perhaps even more importantly, they helped us identify the boundaries of today’s services so that, together, we can imagine what WMS might look like in one, three or ten years.

That combination of imagination and hard work has been a hallmark of the WMS community since day one, when we started the development of WMS with five pilot libraries.

Cooperation yields real impact

In case you’ve never been involved in a “pilot,” it’s a lot like being asked to get somewhere by rolling head-over-heels down a hill and then describe the experience in detail. And then do it again. Exciting, sure, but a lot of extra work, for which we are deeply grateful.

That’s why the WMS community is such an important part of the success of WMS—500+ libraries across six continents all coming together to define and create services based on combined experiences.

WMS 500: This is what global library cooperation looks like.
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The global meeting was a chance for WMS members to share their experiences. To celebrate how far we’ve come in just a few short years, we shared a short video that touches on a few of the highlights of our journey.


What’s your vision for the future?

I’m so proud of what our WMS libraries and OCLC staff have accomplished together. We had a great time at the global community meeting and I hope I can see you at a similar event in the future.

Why? Because so much of what we’ve accomplished is based on the ideas, suggestions and vision of our members. If you have a dream about what library services should look like in one or five or ten years, that’s where you should be.

Question…what do you see in the future for library services? Let us know on Twitter with the hashtag #OCLCnext

The post Celebrating the first 500 WMS libraries appeared first on OCLC Next.

by Andrew K. Pace at September 22, 2016 06:52 PM

TSLL TechScans

NISO Launches New Project to Create a Flexible API Framework for E-Content in Libraries

On August 25, 2016, the National Information Standards Organization (NISO) announced a new project relating to APIs and data about electronic content in libraries.

Full text of the NISO announcement:

Voting Members of the National Information Standards Organization (NISO) have approved a new project to modernize library-vendor technical interoperability to improve the access of digital library content and electronic books. Building upon a set of API (Application Programming Interface) Requirements developed by Queens Library, a new NISO Working Group will create a foundational API set that the library community can build on. This set will fulfill an array of user and library needs, including quicker response times, flexible item discovery and delivery options, improved resource availability, and more seamless integration of electronic and physical resources.

Library patrons should expect an excellent user experience and requisite level of convenience should be built into all customer-facing tools that service library patrons. This project is being undertaken to bring patrons' library experiences in line with the modern tools and technologies-especially mobile technologies-they are accustomed to using in other areas of their lives. Currently, libraries use varied technologies, some of which rely on outdated and slow communication protocols, to provide services to users. By establishing standards on RESTful Web services APIs as well as standard mobile extensions, the library industry will leave many archaic, difficult-to-use tool sets behind, and allow libraries more flexibility in meeting local needs.

"11.2 million patrons visited the Queens Library in 2015," says Kelvin Watson, Chief Operating Officer, Senior Vice President, Queens Library. "It's imperative that we keep them coming back by providing fast, efficient service that rivals what they experience in the commercial world. Queens Library, which serves one of the five most diverse counties in the United States, has a vested interest in undertaking this work to customize library operations for specialized local needs. We are excited to have initiated this project at NISO and we look forward to working with other participants to actualize our draft framework."

Volunteer working group members will deliver a foundational framework, in the form of a NISO Recommended Practice, that will communicate an understanding of how libraries should provide and receive data. These library-related communications and functions could include customized genre or category views for browse, search, and discovery of collections; user authentication; transmission of account information; management of barcodes; check out and return of items, streaming of online material, and other requirements as determined by stakeholders. Work will also include the creation of several proof-of-concept services that use the proposed approach to deliver services and a registry to enable supporting data providers and system vendors to communicate their support of the framework. The full work item approved by NISO Voting Members is available on the NISO website.

NISO's Associate Director of Programs, Nettie Lagace, comments, "NISO is eager to begin this work to improve library-patron interactions. Advancing vendor-library communication processes through consensus discussions and agreement is a natural fit in our portfolio of work. NISO's mission is to streamline the work of libraries and other information providers to get content into the hands of consumers." Lagace continues, "We encourage working group participation from libraries, library system providers, providers and distributors of e-books, recorded books, and other forms of digital content and media. We are looking forward to hearing from interested volunteers who can dedicate their technical talents to this important effort." Those who are interested in participating in the E-Content API Framework working group should contact Lagace at

by (Emily Dust Nimsakont) at September 22, 2016 03:34 PM

September 15, 2016

025.431: The Dewey blog

Dewey at IFLA 2016

Papers and presentations from the IFLA 2016 Classification & Indexing Satellite Meeting "Subject Access: Unlimited Opportunities," held 11-12 August at the State Library of Ohio, Columbus, OH, are available here. Among them are two that focus on DDC:

Presentations from the International Dewey Users Meeting at IFLA 2016 held 16 August at the Greater Columbus Convention Center are available here. The agenda included:

  • EPC Meeting 139 (summary of decisions from DDC Editorial Policy Committee meeting about changes to DDC)
  • Data-driven development (use of WorldCat data to help identify areas of the DDC schedules needing development)
  • Linking FAST to Wikipedia and Wikidata (FAST [Faceted Application of Subject Terminology], library metadata, and the networked environment)
  • Principles underlying the EDUG recommendations for mapping involving Dewey (European DDC Users Group recommendations and the University of Oslo project of mapping to the Norwegian WebDewey)
  • PANSOFT software developments (separate slides here; at the meeting there was a live demonstration of ccmapper [concept context mapper], a new mapping product that is optimized for mapping subject terms to Dewey numbers, developed by PANSOFT together with the Norwegian Dewey team; and a live demonstration of the new user notification feature being developed for WebDewey)

by Juli at September 15, 2016 08:35 PM

September 14, 2016

TSLL TechScans

OCLC Research announces Faceted Controlled Vocabularies List

OCLC Research has announced a new electronic discussion list focused on faceted controlled vocabularies. As technical services librarians, we are most familiar with FAST and LCGFT.

Full text of OCLC Research announcement:

We are pleased to announce the debut of a new electronic discussion list hosted by OCLC.
FACETVOC-L (Faceted Controlled Vocabularies discussion list) is a discussion list focused on faceted controlled vocabularies used in libraries, archives and museums. This includes vocabularies such as FAST (Faceted Application of Subject Terminology), AAT (Art and Architecture Thesaurus) and LCGFT (Library of Congress Genre/Form Terms). The list will a be a point of focus for discussion and exchange among librarians, archivists, museum professionals, controlled vocabulary specialists and other professionals engaged in the creation, maintenance, study, and—especially—the application of faceted vocabularies in a variety of contexts including as part of cataloging and metadata editing work and/or deployment in information retrieval and discovery systems.
The FAST (Faceted Application of Subject Terminology) team at OCLC will monitor and participate in the list. OCLC extends a special invitation to other agencies responsible for publishing faceted vocabularies to join FACETVOC-L to monitor and participate in FACETVOC-L discussions.
To subscribe to FACETVOC-L, go to  and click on the “join or leave the list (or change settings)” link. Once your subscription request has been approved, you will receive a welcome message.
To send messages to FACETVOC-L, go to  and click on the “post to the list” link, or email the post to: (note: you must be a subscriber to post to the list)
To search the FACETVOC-L list archives (available to subscribers only), go to and click on the “search the archives” link.
OCLC Research extends a special thanks to the ALCTS CaMMS Faceted Subject Access Interest Group (a unit of the Association of Library Collections and Technical Services, a division of the American Library Association) for encouraging OCLC to establish FACETVOC-L.

by (Jackie Magagnosc) at September 14, 2016 07:45 PM


Call for proposals for Mashcat in Atlanta 2017

The MashcatATL planning group is excited to announce that the second face-to-face Mashcat event in North America will be held January 24, 2017, at Georgia State University Library in Atlanta, Georgia. We invite you to save the date, and we hope to have registration and a schedule for this low-cost (less than $10), 1-day event open by November.

At present, we are accepting proposals for talks, events, panels, workshops or other sessions for the Mashcat event. We are open to a variety of formats, with the reminder that this will be a one-day, single-track event aiming to support the cross-pollination goals of Mashcat (see more below). We are open to proposals for sessions led virtually. Please submit your proposals using this form. All proposals must be received by October 25, 2016, midnight EST, and we will respond to all proposals by November 8, 2016.

What is Mashcat? “Mashcat” was originally an event in the UK in 2012 aimed at bringing together people working on the IT systems side of libraries with those working in cataloguing and metadata. Four years later, Mashcat is a loose group of metadata specialists, cataloguers, developers and anyone else with an interest in how metadata in and around libraries can be created, manipulated, used and re-used by computers and software. The aim is to work together and bridge the communications gap that has sometimes gotten in the way of building the best tools we possibly can to manage library data. Among our accomplishments in 2016 was holding the first North American face-to-face event in Boston in January and running webinars.  If you’re unable to attend a face-to-face meeting, we will be holding at least one more webinar in 2016. For more information about mashcat in general, see

For more information about the Atlanta event or for questions about the proposal form, please contact Erin Leach ( Thanks for considering, and we hope to see you in January.

The Mashcat ATL planning team:

  • Galen Charlton (
  • Erin Grant (
  • Elaine Hardy (
  • Marlene Harris (
  • Mary Jinglewski (
  • Erin Leach (
  • Emily Williams (
  • Susan Wynne (

by Galen Charlton at September 14, 2016 05:11 PM


Multiplying the power of place

power-of-placeIt’s easy to find digital items online—pictures, videos, maps, etc.—that can connect you to another place, person or library. What may not be as immediately apparent is that physical objects can also connect users to libraries in many different places. As someone who works with our interlibrary loan data, I see fantastic examples of distant libraries establishing relationships that leverage physical collections. In doing so, they improve how local users experience their local library.

It’s not just the long tail

There are some popular misconceptions about interlibrary lending and resource sharing. Yes, it’s sometimes about “the long tail,” which for libraries usually means difficult-to-find items and out-of-print materials. But often, it’s not. Best sellers make up a large portion of the top ILL requests we track because ILL helps libraries fill needs wherever they find them, not just for highly specific, academic resources.

ILL helps libraries fill needs wherever they find them…not just for academic texts.
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One of the reasons I love being part of the OCLC resource sharing community is the strength of the community itself and its desire to fill those needs. Resource sharing librarians are some of the most gregarious and tenacious people I’ve ever met, and you can see that sense of purpose in how they take care of their users—and in the stories they tell about their favorite ILL relationships.

Transatlantic “Quests”

While reviewing ILL data and trends recently, we came across some great examples of stories like that. For example, we found that Johnson County Library in Kansas, USA, was requesting titles from Hertfordshire Public Library, just outside London in the UK. Johnson County wasn’t requesting from other UK libraries, just this one. Why?

We dug a little deeper and we found that the titles were from two juvenile fantasy series, Beast Quest and Sea Quest. In talking with Linda Riehl at the Johnson County Library, she mentioned a patron who has requested many of the 78 titles in the series. She established a relationship with Tracy Jackson in Hertfordshire—as they have the entire series available—and so far, Linda has borrowed 38 from the series for her patron. This is a great example of how global cooperation helps get people what they want from their local libraries, even if the materials have to cross the ocean to get there.

Mars, prisons and Hollywood

Every year, we publish our top ten most-requested titles. These titles are always best sellers or titles like The Martian that have recently been made in to a film. Along with the ILL community, my team and I enjoy predicting what’s going to come up in the coming year.

But what’s also fascinating are the titles that stay in the most-requested list. One such title has endured for six years now—it’s called The 48 Laws of Power by Robert Greene. It is a US best seller, having moved more than 1.2 million copies. No one on my team had heard of this book, and we’re all avid readers, so we did a bit more digging. What we found was that the libraries requesting this title were doing so on behalf of the prison libraries they serve. It seems that The 48 Laws of Power is something of a cult title, read as a guide to establishing influence and authority by both the Hollywood elite and prison inmates alike.

Every story tells another story

What can we learn about the future of resource sharing from these stories? What can you learn about the community you serve from their requests? These are questions we need to be answering based on real data, interviews, research and follow-up.

OCLC’s Kathleen Gesinger recently wrote about breaking the “curse of knowledge”—our tendency to assume other people know what we do. We all make a lot of assumptions about library users. With more than 8,000 libraries in the WorldCat resource sharing community, we can certainly pool our stories, ideas and data in order to better serve users’ actual needs, not just our impressions. Adding that kind of rigor to the compassion and energy I see every day from resource sharing librarians would be awesome.

Question…What surprising requests have come through your resource sharing services? Let us know on Twitter with the hashtag #OCLCnext

The post Multiplying the power of place appeared first on OCLC Next.

by Katie Birch at September 14, 2016 01:58 PM

September 13, 2016

TSLL TechScans

Watch the Librarian of Congress Ceremony Live Tomorrow!

14thLibrarian of Congress Incumbent, Carla Hayden
Image from Wikipedia
The Library of Congress (LC) will stream Carla Hayden’s swearing-in on its YouTube channel on Sept. 14 at noon EDT. Hayden, who will become the 14th Librarian of Congress, will take the oath using the Lincoln Bible from the LC’s collection. The video will have closed captioning.

This historic ceremony marks not one, but two milestones: Hayden is both the first woman and the first African-American to serve as Librarian of Congress.  

Want to learn more about the journey?  Check out this round-up of resources from the past few years:

·        Carla Hayden Swearing-In to Be Broadcast on YouTube – September 2, 2016
Library of Congress on the upcoming event

·        What the ‘First Black Woman’ Librarian of Congress Means – July 18, 2016
Time magazine on the milestone firsts of Hayden’s confirmation

·        Five Things to Know about Carla Hayden, America’s First Black, Female Librarian of Congress – July 13, 2016 offers a few interesting facts about Hayden and what her appointment means

·        The Library of Congress Gets a History-Making New Leader – July 13, 2016
The Atlantic’s take on Hayden’s confirmation

·        Senate Confirms First Black Female Librarian of Congress – July 13, 2016
The Hill’s take on Hayden’s confirmation 

·        “No” on Nomination of Carla Hayden to Be Librarian of Congress – July 13, 2016
Heritage Action for America takes issue with the president’s nomination

·        Obama Taps Baltimore Library Chief Carla Hayden to Lead Library of Congress – February 24, 2016
NBC News on Carla Hayden’s nomination by President Barack Obama

·        What Law Librarian Want to See in the Next Librarian of Congress – August 3, 2015
3 Geeks and a Law Blog on what the American Association of Law Libraries hopes to see in their next Librarian of Congress

·        Finding a Librarian of Congress for the Digital Age – June 23, 2015
Information Today’s take on James Billington’s retirement and the skills and expertise desired in his future replacement

·        Nation’s Librarian Champions Digital Age – December 23, 2014
Learn more about James H. Billington and his tenure at the Library of Congress

Prefer to watch instead of read?  Take a moment to meet President Obama’s Nominee for Librarian of Congress through this short video, posted on The White House’s YouTube channel in February of 2016.

by (Ashley Moye) at September 13, 2016 02:37 PM

September 11, 2016

Terry's Worklog

MarcEdit PreUpdate Notes

Three significant changes will be coming as part of MarcEdit’s Sunday update.  These impact the MARCEngine, Regular Expression Processing, and the Linked Data Platform.

MARCEngine Changes:

In May 2016, I had to make some changes to the MARCEngine to remove some of the convenience functions that allowed mnemonic processing to occur on UTF8 data or HTML entitles on MARC8 data.  Neither of these should happen, and there were issues that came up related to titles that actually included HTML entitles in the titles.  So, this kind of processing had to be removed.

Over the past few months, I’ve been re-evaluating how these functions use to work, and have been bringing them back.  Sunday will mark the reintroduction of many of these functions (though, not the HTML entity translation when it’s not specifically appropriate).  The upside, is that coupled with the new encoding work, the tool will be able to support more mixed encoding use-cases.

Regular Expression Processing

The most significant changes to the Regular Expression engine processing is how the multi-line processing works in the Replace Function.  To protect users, I’d set up the match any character “.” match all characters but a new line character.  This was done to keep users from accidently deleting data.  However, this meant that when using the multi-line processing option, it really only worked when fields were side by side.  By removing this limitation, users working with the multi-line option will now have full access to the entire record with the Regular Expression processing.  And with that, a word of warning…be careful.  The Multi-line processing is the easiest way to accidently delete bibliographic data through greedy matches.

Additionally, I’ve added an option to the Replace Function dialog that makes it easier to know that MarcEdit has this option.  Right now, users have to know that you need to add a /m to the end of your expression to initiate the multi-line mode.  You can still do that – but for users that don’t know that this is the case, a new option has been added to turn on the Multiline option (see below).


The MultiLine Evaluation will be enabled and selectable when the Use regular expressions option is checked.

Linked Data Platform Changes

The Linked Data Platform will be seeing two significant changes.  The first change is occurring in the code to support linking fields like the 880.  This has meant adding a new special processing instruction “linking”, which can now be used to perform reconciliation against data in these fields.  This is particularly important for Asian languages, Arabic languages, Hebrew, etc.

The second change is in the rules file itself.  I’ve profiled the 880 field, as well as a wide range of other collections.

Finally, I’ve added a note to the Main Window that helps users find their rules file for edit, as well as points to the knowledge-base articles and videos explaining the process. (see below)



Other Changes:

Other changes that will be made in this update:

  1. ISSN Report – tweaked the process due to a bug.
  2. MARCCompare – added a new output type; in addition to the HTML output, there will be a diff file output
  3. Preferences Window/Language – Added a help icon that points to the knowledge-base articles related to fonts and font recommendations.

These changes will be part of the Sunday update, and at this point, look like they will be applicable to all versions of MarcEdit (though, I do have a few UI tweaks that I need to complete on the mac side).

If you have questions, let me know.  Otherwise, these changes will be made available on 9/11/2016 9/12/2016 [evening].


by reeset at September 11, 2016 04:33 AM

September 10, 2016

Mod Librarian

10 Things on the 10th September: Metadata, Content, DAM, Dublin Core and More

10 Things on the 10th September: Metadata, Content, DAM, Dublin Core and More

Here are ten things to kick off autumn:

  1. Why do content marketers need digital librarians?
  2. Another DAM Podcast interview with Jan Delos Santos from RPA.
  3. Dublin Core versus Schema Markup.
  4. How to not fail at taxonomy by Emily Kolvitz.
  5. What is metadata and why is it as important as the data itself? BONUS: Metadata and DAM by the other Kevin Bacon.
  6. Advantages of a graph-based metadata repository.
  7. Meta…

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September 10, 2016 12:10 PM