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Introduction
URLs for bibliographic details pages in Books & Media will have different formats depending on whether the bibliographic record was created in Aleph and migrated to Alma, or whether it was created directly in Alma.
We’ll refer to records created in Aleph and migrated to Alma as “Aleph-born”, and records created in Alma directly (after cutover on July 10th) as “Alma-born.”
Bibliographic record identifiers in Aleph were used to construct Books & Media URLs
When an bib record was created in Aleph, it received a nine-digit Aleph sysid that served as the unique record identifier. The Aleph sysid was used to create the URL in Books & Media.
For example, if an Aleph-born record was in Books & Media with the URL https://find.library.duke.edu/catalog/DUKE002109345, the last nine digits - 002109345 - are the Aleph sysID.
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How are bib identifiers in Alma constructed for Aleph-born
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records?
In Alma, the unique record identifier for the bibliographic record is called the MMS ID.
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The format of an Alma MMS ID for an Aleph-born record is 99 + Aleph-born sysid + 010 + 8501
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Example:
A bibliographic record was created in Aleph and assigned a sysid of 002109345
When that record migrated to Alma, it was assigned an Alma MMDID MMS ID of 990021093450108501
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How are bib identifiers in Alma constructed for Alma-born records?
An Alma-born bibliographic record is assigned an MMS ID when it is created.
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The format of an Alma MMS ID for an Alma-born record is 99 + unique record identifier + 8501
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What format will Books & Media
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URLs use for Aleph-born records
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?
When an Aleph-born record is exported from Alma to find.library.duke.edu, the export creates the URL that will be used in Books & Media.
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An Aleph-born bibliographic record has a sysid of 006288172
When that record is migrated to Alma, it has an MMS ID of 990062881720108501
When that record is exported to Books & Media, it will live at this URL: https://find.library.duke.edu/catalog/DUKE006288172
What format will Books & Media
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URLs use for Alma-born records?
For Alma-born bibliographic records, the MMS ID will become the number that is in the Books & Media URL.
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An Alma-born bibliographic record has an MMS ID of 99112809063108501
When that record is exported to Books & Media, it will live at this URL: https://find.library.duke.edu/catalog/DUKE99112809063108501
What format will Catalog Request System URLs use for Aleph-born and Alma-born records?
The URL for the catalog request system will use the same number as the URL for the Books & Media record, for both Aleph-born and Alma-born records.
Example for an Aleph-born record
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An Alma-born bibliographic record has an MMS ID of 99112809063108501
The Books & Media URL will be https://find.library.duke.edu/catalog/DUKE99112809063108501 and the request system URL will be requests.library.duke.edu/item/99112809063108501
What part of the Alma MMS ID is unique?
The Alma MMS ID is formed of a prefix, a numeric string, and a suffix.
Alma uses prefixes in a record number to identify the record type. E.g., the ‘99’ prefix signifies a bibliographic record; ‘53’, an electronic portfolio; ‘23’, an item record.
That means that it’s important to know that the “unique string” in the MMS ID is only unique within the context of bibliographic records.
If you add the prefix, then the record number becomes unique to Duke’s instance of Alma.
If you then add the suffix that signifies Duke’s Alma install, the record number becomes unique to records across all Alma institutions.
(h/t to Matt Harrington for this explanation)
Other questions
Will we continue to use the Aleph sysid for the URL for Aleph-born records in perpetuity? It makes the URLs inconsistent.
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