Commons:Digital Public Library of America/NARA

Technical Notes

Keys

The JSON database dump has the following metadata keys in the following nest structure (first 580k files):

• v is count (how many times it appeared)
• s is to hold a nest

TODO-transform to xml

metadata key structure

{ "doc": { "v": 587109, "s": { "ingestType": { "v": 587109, "s": {} }, "title-only": { "v": 9, "s": {} }, "objects": { "v": 9, "s": { "object": { "v": 9, "s": { "file-url": { "v": 8, "s": {} }, "file-size": { "v": 8, "s": {} }, "mime-type": { "v": 8, "s": {} }, "num": { "v": 8, "s": {} }, "thumbnail-url": { "v": 8, "s": {} }, "object-sequence-number": { "v": 8, "s": {} } } } } }, "hasView": { "v": 586884, "s": {} }, "arc-id": { "v": 9, "s": {} }, "id": { "v": 587109, "s": {} }, "general-records-types": { "v": 9, "s": { "general-records-type": { "v": 9, "s": { "general-records-type-desc": { "v": 9, "s": {} }, "general-records-type-id": { "v": 9, "s": {} }, "num": { "v": 9, "s": {} } } } } }, "edited-timestamp": { "v": 9, "s": {} }, "sourceResource": { "v": 586884, "s": { "language": { "v": 1020, "s": {} }, "title": { "v": 586881, "s": {} }, "description": { "v": 386940, "s": {} }, "subject": { "v": 61103, "s": {} }, "isPartOf": { "v": 586883, "s": {} }, "format": { "v": 407852, "s": {} }, "extent": { "v": 3130, "s": {} }, "stateLocatedIn": { "v": 586884, "s": { "name": { "v": 586884, "s": {} } } }, "creator": { "v": 579262, "s": {} }, "date": { "v": 504158, "s": { "displayDate": { "v": 504158, "s": {} }, "end": { "v": 504158, "s": {} }, "begin": { "v": 504158, "s": {} } } }, "type": { "v": 574985, "s": {} }, "spatial": { "v": 34371, "s": {} }, "collection": { "v": 586884, "s": { "@id": { "v": 586884, "s": {} }, "title": { "v": 586884, "s": {} }, "id": { "v": 586884, "s": {} } } }, "rights": { "v": 586884, "s": {} } } }, "creators": { "v": 9, "s": { "creator": { "v": 9, "s": { "standard": { "v": 8, "s": {} }, "creator-id": { "v": 8, "s": {} }, "summary": { "v": 8, "s": {} }, "creator-record-type": { "v": 8, "s": {} }, "creator-type": { "v": 8, "s": {} }, "creator-display": { "v": 8, "s": {} }, "num": { "v": 8, "s": {} } } } } }, "use-restriction": { "v": 9, "s": { "use-status": { "v": 9, "s": {} }, "specific-use-restrictions": { "v": 9, "s": {} } } }, "@id": { "v": 587100, "s": {} }, "mlr-numbers": { "v": 1, "s": { "mlr-number": { "v": 1, "s": {} } } }, "isShownAt": { "v": 586884, "s": {} }, "hierarchy": { "v": 9, "s": { "hierarchy-item": { "v": 9, "s": {} } } }, "@context": { "v": 586884, "s": { "name": { "v": 586884, "s": {} }, "hasView": { "v": 586884, "s": {} }, "state": { "v": 586884, "s": {} }, "begin": { "v": 586884, "s": { "@id": { "v": 586884, "s": {} }, "@type": { "v": 586884, "s": {} } } }, "object": { "v": 586884, "s": {} }, "coordinates": { "v": 586884, "s": {} }, "sourceResource": { "v": 586884, "s": {} }, "dataProvider": { "v": 586884, "s": {} }, "aggregatedDigitalResource": { "v": 586884, "s": {} }, "provider": { "v": 586884, "s": {} }, "stateLocatedIn": { "v": 586884, "s": {} }, "edm": { "v": 586884, "s": {} }, "end": { "v": 586884, "s": { "@id": { "v": 586884, "s": {} }, "@type": { "v": 586884, "s": {} } } }, "isShownAt": { "v": 586884, "s": {} }, "originalRecord": { "v": 586884, "s": {} }, "LCSH": { "v": 586884, "s": {} }, "@vocab": { "v": 586884, "s": {} }, "dpla": { "v": 586884, "s": {} }, "collection": { "v": 586884, "s": {} } } }, "variant-control-numbers": { "v": 9, "s": { "variant-control-number": { "v": 9, "s": { "variant-note": { "v": 7, "s": {} }, "variant-number-desc": { "v": 8, "s": {} }, "variant-type": { "v": 8, "s": {} }, "num": { "v": 8, "s": {} }, "mlr": { "v": 8, "s": {} }, "variant-number": { "v": 8, "s": {} } } } } }, "level-of-desc": { "v": 9, "s": { "level-id": { "v": 9, "s": {} }, "lod-display": { "v": 9, "s": {} } } }, "scope-content-note": { "v": 2, "s": {} }, "collection": { "v": 9, "s": { "@id": { "v": 9, "s": {} }, "title": { "v": 9, "s": {} }, "id": { "v": 9, "s": {} } } }, "parent-control-group": { "v": 9, "s": { "parent-control-lod": { "v": 9, "s": {} }, "parent-control-title": { "v": 9, "s": {} }, "parent-control-id": { "v": 9, "s": {} } } }, "production-dates": { "v": 9, "s": { "production-date": { "v": 9, "s": {} } } }, "subject-references": { "v": 3, "s": { "subject-reference": { "v": 3, "s": { "display-name": { "v": 1, "s": {} }, "standard": { "v": 1, "s": {} }, "subject-type": { "v": 1, "s": {} }, "subject-id": { "v": 1, "s": {} }, "num": { "v": 1, "s": {} } } } } }, "ingestDate": { "v": 587109, "s": {} }, "parent": { "v": 9, "s": { "parent-id": { "v": 9, "s": {} }, "parent-lod": { "v": 9, "s": {} }, "parent-title": { "v": 9, "s": {} } } }, "created-timestamp": { "v": 9, "s": {} }, "provider": { "v": 586884, "s": { "@id": { "v": 586884, "s": {} }, "name": { "v": 586884, "s": {} } } }, "sequence-number": { "v": 1, "s": {} }, "general-notes": { "v": 1, "s": { "general-note": { "v": 1, "s": {} } } }, "title": { "v": 225, "s": {} }, "dataProvider": { "v": 586884, "s": {} }, "local-identifier-desc": { "v": 6, "s": {} }, "_id": { "v": 587109, "s": {} }, "object": { "v": 572067, "s": {} }, "title-date": { "v": 9, "s": {} }, "indexable-dates": { "v": 9, "s": { "date-range": { "v": 9, "s": {} } } }, "arc-id-desc": { "v": 9, "s": {} }, "originalRecord": { "v": 586893, "s": { "title-only": { "v": 586890, "s": {} }, "release-dates": { "v": 328, "s": { "release-date": { "v": 328, "s": {} } } }, "title-date": { "v": 504169, "s": {} }, "microform-publications": { "v": 59353, "s": { "microform-publication": { "v": 59353, "s": { "microform-note": { "v": 59125, "s": {} }, "microform-title": { "v": 59348, "s": {} }, "microform-id": { "v": 59348, "s": {} }, "num": { "v": 59348, "s": {} } } } } }, "indexable-dates": { "v": 586885, "s": { "date-range": { "v": 586885, "s": {} } } }, "other-titles": { "v": 1885, "s": { "other-titles-only": { "v": 1885, "s": {} } } }, "shotlist": { "v": 2063, "s": {} }, "arc-id-desc": { "v": 586893, "s": {} }, "variant-control-numbers": { "v": 487072, "s": { "variant-control-number": { "v": 487072, "s": { "variant-note": { "v": 10122, "s": {} }, "variant-number-desc": { "v": 394383, "s": {} }, "variant-type": { "v": 394384, "s": {} }, "num": { "v": 394384, "s": {} }, "mlr": { "v": 394384, "s": {} }, "variant-number": { "v": 394383, "s": {} } } } } }, "level-of-desc": { "v": 586893, "s": { "level-id": { "v": 586893, "s": {} }, "lod-display": { "v": 586893, "s": {} } } }, "scope-content-note": { "v": 386942, "s": {} }, "parent-control-group": { "v": 586892, "s": { "parent-control-lod": { "v": 586892, "s": {} }, "parent-control-title": { "v": 586892, "s": {} }, "parent-control-id": { "v": 586892, "s": {} } } }, "internal-transfer-numbers": { "v": 6, "s": { "internal-transfer-number": { "v": 6, "s": {} } } }, "edited-status": { "v": 2954, "s": {} }, "custodial-history-note": { "v": 1, "s": {} }, "created-timestamp": { "v": 586893, "s": {} }, "production-series": { "v": 845, "s": { "series-title": { "v": 845, "s": {} }, "series-subtitle-only": { "v": 1, "s": {} }, "series-number": { "v": 529, "s": {} }, "series-subtitle": { "v": 1, "s": {} }, "series-title-only": { "v": 845, "s": {} } } }, "general-notes": { "v": 7447, "s": { "general-note": { "v": 7447, "s": {} } } }, "title": { "v": 586890, "s": {} }, "_id": { "v": 586893, "s": {} }, "production-dates": { "v": 474935, "s": { "production-date": { "v": 474935, "s": {} } } }, "scale-note": { "v": 446, "s": {} }, "copyright-dates": { "v": 11, "s": { "copyright-date": { "v": 11, "s": {} } } }, "sound-type": { "v": 2392, "s": {} }, "subject-references": { "v": 73451, "s": { "subject-reference": { "v": 73451, "s": { "display-name": { "v": 27085, "s": {} }, "standard": { "v": 27085, "s": {} }, "subject-type": { "v": 27085, "s": {} }, "subject-id": { "v": 27085, "s": {} }, "num": { "v": 27085, "s": {} } } } } }, "contributors": { "v": 50398, "s": { "contributor": { "v": 50398, "s": { "contributor-display": { "v": 47490, "s": {} }, "contributor-record-type": { "v": 47490, "s": {} }, "contributor-id": { "v": 47490, "s": {} }, "contributor-type": { "v": 47490, "s": {} }, "standard": { "v": 47490, "s": {} }, "num": { "v": 47490, "s": {} } } } } }, "rct-numbers": { "v": 11, "s": { "rct-number": { "v": 11, "s": {} } } }, "arc-id": { "v": 586893, "s": {} }, "general-records-types": { "v": 586893, "s": { "general-records-type": { "v": 586893, "s": { "general-records-type-desc": { "v": 586841, "s": {} }, "general-records-type-id": { "v": 586841, "s": {} }, "num": { "v": 586841, "s": {} } } } } }, "edited-timestamp": { "v": 586893, "s": {} }, "creators": { "v": 579273, "s": { "creator": { "v": 579273, "s": { "standard": { "v": 203365, "s": {} }, "creator-id": { "v": 203365, "s": {} }, "summary": { "v": 203363, "s": {} }, "creator-record-type": { "v": 203365, "s": {} }, "creator-type": { "v": 203365, "s": {} }, "creator-display": { "v": 203365, "s": {} }, "num": { "v": 203365, "s": {} } } } } }, "use-restriction": { "v": 586893, "s": { "use-note": { "v": 1413, "s": {} }, "use-status": { "v": 586893, "s": {} }, "specific-use-restrictions": { "v": 586893, "s": { "specific-use-restrictions_row": { "v": 665, "s": { "specific-use-restriction": { "v": 665, "s": {} }, "num": { "v": 665, "s": {} } } } } } } }, "date-note": { "v": 3246, "s": {} }, "online-resources": { "v": 2812, "s": { "online-resource": { "v": 2812, "s": { "online-resource-url": { "v": 2712, "s": {} }, "online-resource-description": { "v": 2712, "s": {} }, "online-resource-note": { "v": 2712, "s": {} }, "num": { "v": 2712, "s": {} } } } } }, "local-identifier": { "v": 406244, "s": {} }, "languages": { "v": 1055, "s": { "language": { "v": 1055, "s": {} } } }, "former-control-groups": { "v": 269, "s": { "former-control-group": { "v": 269, "s": { "former-title": { "v": 209, "s": {} }, "former-type": { "v": 209, "s": {} }, "former-id-desc": { "v": 209, "s": {} }, "former-id": { "v": 209, "s": {} }, "num": { "v": 209, "s": {} } } } } }, "subtitle": { "v": 368, "s": {} }, "parent": { "v": 586893, "s": { "parent-control-id": { "v": 1, "s": {} }, "parent-id": { "v": 586893, "s": {} }, "parent-lod": { "v": 586893, "s": {} }, "parent-title": { "v": 586893, "s": {} } } }, "mlr-numbers": { "v": 18760, "s": { "mlr-number": { "v": 18760, "s": {} } } }, "coverage-dates": { "v": 29431, "s": { "cov-start-date": { "v": 29431, "s": {} }, "cov-end-date": { "v": 29431, "s": {} } } }, "accession-numbers": { "v": 1795, "s": { "accession-number": { "v": 1795, "s": {} } } }, "hierarchy": { "v": 586893, "s": { "hierarchy-item": { "v": 586893, "s": { "hierarchy-item-title": { "v": 1, "s": {} }, "hierarchy-item-lod": { "v": 1, "s": {} }, "hierarchy-item-id": { "v": 1, "s": {} }, "hierarchy-item-record-group-number": { "v": 1, "s": {} } } } } }, "subtitle-only": { "v": 368, "s": {} }, "objects": { "v": 586893, "s": { "object": { "v": 586893, "s": { "in-database": { "v": 676, "s": {} }, "file-url": { "v": 561221, "s": {} }, "file-size": { "v": 550559, "s": {} }, "designator": { "v": 86648, "s": {} }, "display": { "v": 680, "s": {} }, "mime-type": { "v": 561221, "s": {} }, "description": { "v": 29358, "s": {} }, "num": { "v": 561221, "s": {} }, "thumbnail-url": { "v": 546526, "s": {} }, "object-sequence-number": { "v": 556554, "s": {} } } } } }, "local-identifier-desc": { "v": 406244, "s": {} }, "sequence-number": { "v": 66661, "s": {} }, "broadcast-dates": { "v": 19, "s": { "broadcast-date": { "v": 19, "s": {} } } }, "access-restriction": { "v": 586890, "s": { "restriction-note": { "v": 1220, "s": {} }, "specific-access-restrictions": { "v": 586890, "s": { "specific-access-restrictions_row": { "v": 569, "s": { "security-classification": { "v": 522, "s": {} }, "restriction": { "v": 562, "s": {} }, "num": { "v": 562, "s": {} } } } } }, "restriction-status": { "v": 586890, "s": {} } } }, "physical-occurrences": { "v": 586893, "s": { "physical-occurrence": { "v": 586885, "s": { "extent": { "v": 3088, "s": {} }, "copy-status": { "v": 190808, "s": {} }, "note": { "v": 1410, "s": {} }, "total-footage": { "v": 1, "s": {} }, "reference-units": { "v": 190808, "s": { "reference-unit": { "v": 190808, "s": { "name": { "v": 190805, "s": {} }, "address2": { "v": 159052, "s": {} }, "fax": { "v": 190805, "s": {} }, "address1": { "v": 190805, "s": {} }, "phone": { "v": 190687, "s": {} }, "ref-id": { "v": 190805, "s": {} }, "num": { "v": 190805, "s": {} }, "postcode": { "v": 190805, "s": {} }, "mailcode": { "v": 190805, "s": {} }, "state": { "v": 190805, "s": {} }, "summary": { "v": 190805, "s": {} }, "email": { "v": 190805, "s": {} }, "city": { "v": 190805, "s": {} } } } } }, "media-occurrences": { "v": 190808, "s": { "media-occurrence": { "v": 190808, "s": { "running-time": { "v": 2, "s": {} }, "base": { "v": 7, "s": {} }, "physical-restriction-note": { "v": 524, "s": {} }, "wind": { "v": 5, "s": {} }, "height": { "v": 40, "s": {} }, "piece-count": { "v": 21, "s": {} }, "media-type": { "v": 190755, "s": {} }, "dimension": { "v": 44, "s": {} }, "element-number": { "v": 33, "s": {} }, "width": { "v": 40, "s": {} }, "reel-tape-disc-no": { "v": 33, "s": {} }, "container-id": { "v": 25518, "s": {} }, "process": { "v": 4, "s": {} }, "reproduction-count": { "v": 159, "s": {} }, "footage": { "v": 15, "s": {} }, "num": { "v": 190755, "s": {} }, "color": { "v": 5518, "s": {} }, "format": { "v": 40, "s": {} }, "media-occurrence-note": { "v": 735, "s": {} } } } } }, "holdings-measurements": { "v": 2, "s": { "holdings-measurement": { "v": 2, "s": { "num": { "v": 2, "s": {} }, "measurement-type": { "v": 2, "s": {} }, "measurement-count": { "v": 2, "s": {} } } } } }, "total-running-time": { "v": 2, "s": {} } } } } } } }, "_rev": { "v": 587109, "s": {} }, "access-restriction": { "v": 9, "s": { "specific-access-restrictions": { "v": 9, "s": {} }, "restriction-status": { "v": 9, "s": {} } } }, "physical-occurrences": { "v": 9, "s": { "physical-occurrence": { "v": 1, "s": {} } } }, "microform-publications": { "v": 1, "s": { "microform-publication": { "v": 1, "s": { "microform-note": { "v": 1, "s": {} }, "microform-title": { "v": 1, "s": {} }, "microform-id": { "v": 1, "s": {} }, "num": { "v": 1, "s": {} } } } } }, "local-identifier": { "v": 6, "s": {} } } }, "key": { "v": 587109, "s": {} }, "value": { "v": 587109, "s": { "rev": { "v": 587109, "s": {} } } }, "id": { "v": 587109, "s": {} } }