POD Aggregator (IvyPlus) data set and mapping (aka Data Lake)
- Corinna Baksik
Owned by Corinna Baksik
Harvard contributes metadata to POD: https://pod.stanford.edu
Incremental files are sent daily.Â
Included as of Nov 2022:
- All active bibs with active MARC holdings (from Alma system), as MARCxml.Â
- This includes NET holdings, which contain links to locally digitized resources available to the public, as well as a small amount of non-Harvard public resources
- This includes FIG holdings, which contain links to material digitized through the Google Book Search project. Some links may point to HathiTrust.Â
- NOT included - bibs without MARC holdings, i.e.:Â
- No licensed e-journals, or activated e-journal collections such as Directory of Open Access Journals, or free e-resources managed as portfolios in Alma
- No licensed e-books
- No activated database records such as encyclopedias
General notes on data:
- The data is published from Alma with the Linked Data enrichment option, which adds the $$0 (subfield zero) with linked data URIs when a heading is linked to an authority record. For detailed information, see https://developers.exlibrisgroup.com/alma/integrations/linked_data.
- Private data is excluded per this Alma norm rule
- Each bib record is embedded with fields from linked holdings records
- Non-Latin parallel fields will be stored in linked 880 fields. MARC spec:Â https://www.loc.gov/marc/bibliographic/bd880.html
- All fields from the same holding will have the same $8 value.Â
- All items from the same holding will have the $8 value of the linked holding.Â
Bibs are enriched with the following public holdings fields. For definitions of local fields visit Harvard defined MARC fields
- 852
- 007
- 506, 538, 583
- 541, 561, 562, 563
- 843, 845
- 856
- 866, 867, 868
- 966, 967, 968
- 977
Bibs are enriched with item data. Each item is represented by a 876 field. Subfields are defined as follows:Â
| Subfield | Content | Note |
|---|---|---|
| 0 (zero) | internal item identifier (PID) | assigned by Alma |
| b | permanent library code | corresponds to 852 $b |
| c | permanent location code | corresponds to 852 $c |
| l (lowercase L) | current library code | if the item is in a temporary library/location, this value will be the temporary library, otherwise it will be the permanent library |
| m | current location code | see above, for location |
| 7 | call number type | classification scheme |
| n | call number | entire call number from 852 compressed into single subfield |
| d | Enum A | |
| e | Enum B | |
| f | Chron I | |
| g | Chron J | |
| 3 | description | usually only present for serials / multi-volumes |
| q | item status | binary value: in place (1) or not in place (0) |
| j | process type | e.g. missing etc. Code definitions Item Statuses, Process Types, and Required Fields |
| p | barcode | |
| t | copy ID | from item record, not holding 852 |
| y | material type | code definitions:Â Item Material Types |
| h | item policy | loan period / restrictions, encoded as 2 digit value. Definitions:Â Item Policies |
| x | provenance | used for ReCAP. See ReCAP Shared Collection - Alma coding for items and holdings |
| z | stat note 2 | used for retention commitments (ReCAP / Hathi) |
| 8 | holding ID | identifier of holding to which item is linked |