Aleph MARC 21

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In most aspects the Aleph MARC 21 mapping is the same as the Generic MARC mapping. The only exceptions are listed below.

Control Section

Control Section
Normalized Record Field	Source/Content	Note
ILS API ID	Created from the PNX control/sourceid merged with control/sourcerecorid	Required for OPAC via Primo.

Display Section

Display Section
Display Element	Source	Note
Creator Contrbutor Subject Title Uniform Title Relation	Same as Generic MARC except that conditions were added to prevent the use of non-preferred terms based on the content of $$P.
Library Level Availability	AVA	The Availablity field subfields are created as follows: $$I Institution – based on institution look-up table based on AVA $a $$L Library – based on library lookup table based on AVA $$b $$1 Sublocation – from AVA $$c $$2 Call number – from AVA $$d $$S Availability status – based on AVA $$e $$3 No. of items – from AVA $$f $$4 no of unavailable items – from AVA $$g $$5 multi-volume flag – from AVA $$h $$6 number of loans – from AVA $$i $$9 – For more information, refer to section Adding $$9ONLINE to Library Level Availability. $$P location priority – from AVA $$p $$X source institution code (Aleph ADM) – from AVA $$a $$Y source library code (Aleph sublibrary) – from AVA $$b $$Z source sublocation code (Aleph collection) – from AVA $$j

The Aleph AVA field has the following subfields:

$$a – ADM code.
$$b – sublibrary code.
$$c – collection. Takes first collection of the sublibrary.
$$d – call number. Takes first call number of collection. Subfields from 852 are selected based on the correct_852_subfields parameter in aleph_start,
$$e – availability status (see below for definition).
$$f – number of items (for entire sublibrary not just location).
$$g – number of unavailable loans (see below for definition of unavailable).
$$h – multi-volume flag (Y/N).

If first Z30 Z30-ENUMERATION-A is not blank or 0, then the flag=Y, otherwise the flag=N.
$$i – number of loans (for ranking/sorting). Aleph counts the number of Z36H records.
$$j – code of collection in subfield c.
$$p – location priority.

Definition of an Unavailable Item

An item is unavailable if it matches one of the following conditions:

It is on loan (it has a Z36).
It is on hold shelf (it has Z37=S).
It has a processing status (one of the processing statuses that have been defined as available in tab_expand) and does not have a value in Z30-DEPOSITORY-ID.

Number of Items to Check Threshold

Aleph has a parameter that defines the maximum number of items to check per sublibrary. For more information, refer to the Aleph Publishing Mechanism document.

Availability Statuses from Aleph

The availability statuses are determined as follows:

If the record has no linked items, the availability status is defined as check_holdings.
If the number of items (per sublibrary) is more than the threshold, the availability status is defined as check_holdings.
If the number of items (per sublibrary) is less than the threshold, the status is determined as follows:
If all items are available, then the availability status is defined as available.
If all items are unavailable, then the availability status is defined as unavailable.
If some items are available and others are unavailable, the system checks if the item is multi-volume or not (by checking if first Z30-ENUMERATION-A is not blank or 0).
If it is multi-volume, the availability status is defined as check_holdings.
If it is not multi-volume, the availability status is defined as available.

For more information on Aleph thresholds and availability statuses, refer to the Aleph Publishing Mechanism document.

Links

Links Section
Type of Link	Source	Note
Backlink	$$Taleph_backlink
LinktoHoldings	$$Taleph_holdings

Search

Search Section
Index	Source tag	Notes
Creator/contributor	In addition to the fields used in Generic Marc also:
AUT	For cross-references
Subject	In addition to the fields used in Generic Marc also:
SUB	For cross-references

Sort

Sort Section
Sort type	DC field
Popularity	AVA $i
Author Title	Same as Generic MARC except that conditions were added to prevent the use of non-preferred terms based on the content of $$P.

Facets

Facets Section
Facet	Source	Note
Collection	In addition to Generic Marc: Aleph sublibrary – AVA $$b	Not in use currently
Top-level	Available in Library – records will be tagged as "Available in Library" if AVA $$e=available or check_holdings

Dedup

Dedup Section
Dedup Field	Source	Additional normalization notes
F11	Same as Generic MARC except that the conditions were added to prevent the use of non-preferred terms based on content of $$P.

FRBR

FRBR Section
FRBR Field	Source	Additional normalization notes
K1 K2	Same as Generic MARC except that the conditions were added to prevent the use of non-preferred terms based on content of $$P.

Delivery and Scoping

Delivery and Scoping Section
Delivery Field	Source	Additional normalization notes
Institution	AVA a	Using institution look-up table.

Additional Data

Additional Data Section
Additional Data Field	Source	Additional normalization notes
Author First Author Last Corporate Author Addititional Author	Same as Generic MARC except that conditions were added to prevent the use of non-preferred terms based on the content of $$P.

Browse

The system can create multiple occurrences in separate fields.

Browse Section
Browse field	Source	Note
Author	Same as Generic MARC except that Aleph includes information on the cross-references. For more information, refer to Browse Search.
Subject	Same as Generic MARC except that Aleph includes the information on cross-references and subject type (such as LCSH, MESH, and so forth). For more information, refer to Browse Search.
Title	Same as Generic MARC except that Aleph can include cross-reference information that needs to be suppressed.
Call number	AVA $$d (for call number) AVA $$a (for institution) AVA $$k (for the type)	$$D (display form), $$E (normalized form), $$t (type) and $$I (institution) are created.