Issues with required predicates for Generic items

[danydvd]

Post-migration data is missing required predicates.

Required predicates for generic items are:

• rdf:type
• pcdm:memberOf
• dc:creator
• dcterms:title
• prism:doi
• dcterms:created
• dcterms:type
• dc:subject
• dcterms:language
• ual:sortYear

A report for all of these items is available here

Problematic predicates

• dcterms:type:
  493 items without a dcterms:type predicate. In the original data (gillingham_20180222) there are 73 items that have dcterms:type as '' (empty) ,419 as 'null' and 1 as 'Conference Proceeding'.
  The migration script maps types to URIs (e.g. Learning Object maps to "http://terms.library.ualberta.ca/learningObject") and will ignore any triple with no value. We do not have a mapping for 'Conference Proceeding' and 'null'

• dcterms:language:
  The original data has 441 generic items that are missing a dcterms:language triple (the total number is 710 but there are 269 dataverse dataset that is excluded from migration). Languages are also mapped to URIs (e.g. French maps to "http://id.loc.gov/vocabulary/iso639-2/fre")

• dc:subject:
  This field is backward compatible with dcterms:subject. The original data has 584 generic items (non-thesis and non-dataverse) that are missing a dcterms:subject predicate.

• prism:doi:
  In the original data there are 1000+ items missing a triple with http://terms.library.ualberta.ca/id/doi as predicate (this predicate is mapped to prism:doi in post-migration data). However, most of them are either "draft" or "embargo" items that would not get a doi until there are "public".
  There are still 41 items that are missing the triple: 17 public, 2 authenticated and 22 without a visibility value (see Item with no dcterms:accessRights #264).

• pcdm:memberOf:
  This field is backward compatible with http://terms.library.ualberta.ca/identifiers/hasCollectionId. In the original data there are 891 generic items missing this triple. 270 of these items has at least one of these predicates:
  http://terms.library.library.ca/identifiers/belongsToCommunity
  http://terms.library.ualberta.ca/identifiers/belongsToCommunity
  http://terms.library.ualberta.ca/id/belongsToCommunity
  which means that they belong directly to a community (with a collection in between).

• dc:creator:
  This field is backward compatible with dcterms:creator. In the original data there are 98 items missing this triple.