...
The following fields are specific to the relational database, and do not appear in the data specifications.
| DB Database field | Definition |
|---|---|
| source_set.slug | Human-readable slug to be used in the construction of a URL for the set. |
| source_set.published | Whether or not the set is intended for live publication on the DPLA website. |
| subjects.filter | Whether or not the subject is intended for use as a filterable browse term on the DPLA website. |