Migrates SNAC to the Concept Vocabulary system for Subjects, Activities, and Occupations.
Switches populating Subjects, Activities, and Occupations records from their tables to a single identity_concepts table, while their terms are pulled from terms and concepts table instead of the vocabulary table.
We continue using vocabulary table for other controlled terms and keywords for the internal system.
identity_concepts
table, while their terms are pulled fromterms
andconcepts
table instead of thevocabulary
table.vocabulary
table for other controlled terms and keywords for the internal system.