| --- |
| license: other |
| license_name: per-dataset |
| license_link: LICENSE |
| task_categories: |
| - image-classification |
| - text-retrieval |
| language: |
| - en |
| - mul |
| tags: |
| - museum |
| - cultural-heritage |
| - sqlite |
| - iiif |
| - folio |
| pretty_name: Museado Folios |
| size_categories: |
| - 1K<n<10K |
| --- |
| |
| # Museado Folios |
|
|
| Portable SQLite archives of normalized museum collection data. Each `.folio.sqlite.gz` file is a self-describing, standalone database containing items, metadata, and schema documentation. |
|
|
| ## What is a Folio? |
|
|
| A folio is a SQLite file with a defined set of tables storing normalized cultural heritage records. Each folio contains: |
|
|
| - **item** — normalized rows with structured DTO data and display labels |
| - **schema_table / schema_property** — observed field metadata with types, stats, and display hints |
| - **docs** — generated human/machine-readable documentation |
| - **term_set / term** — controlled vocabularies |
| - **core** — named collections within the folio |
| - **relation_type / relation** — typed links between items |
|
|
| ## Usage |
|
|
| Download and query directly with `sqlite3`: |
|
|
| ```bash |
| gunzip mus/cleveland.folio.sqlite.gz |
| sqlite3 mus/cleveland.folio.sqlite |
| ``` |
|
|
| ```sql |
| -- Browse items |
| SELECT local_id, label, dto_type FROM item LIMIT 20; |
| |
| -- Explore the schema |
| SELECT name, sql FROM sqlite_master WHERE type = 'table'; |
| |
| -- Read documentation |
| SELECT id, title, type FROM docs ORDER BY position; |
| |
| -- Query DTO fields via JSON |
| SELECT local_id, json_extract(dto_data, '$.title'), json_extract(dto_data, '$.date') |
| FROM item WHERE dto_type = 'painting' LIMIT 10; |
| ``` |
|
|
| ## Archive Format |
|
|
| These are **deflated** folios — no secondary indexes, no FTS5 search tables, no generated views. This keeps them small for distribution. To inflate for browsing/searching, use `folio-bundle`: |
|
|
| ```bash |
| php bin/console folio:restore path/to/archive.folio.sqlite.gz provider/dataset |
| ``` |
|
|
| ## Schema |
|
|
| Every table's DDL includes inline SQL comments describing each column. Query `sqlite_master` for self-documentation: |
|
|
| ```sql |
| SELECT sql FROM sqlite_master WHERE type = 'table' AND name = 'item'; |
| ``` |
|
|
| ## Source |
|
|
| Data is normalized from open-access museum APIs by [Museado](https://github.com/museado). All records in this repository are CC0 or equivalent open-access licensed by their source institutions. |
|
|
| ## Collections |
|
|
| | Folio | Source | License | |
| |-------|--------|---------| |
| | mus/cleveland | Cleveland Museum of Art | CC0 | |
| | mus/walters | The Walters Art Museum | CC0 | |
| | mus/victoria | Museums Victoria | CC-BY | |
| | mus/auur | Autores Uruguay | Open | |
| | mus/aust | National Museum of Australia | Open | |
| | mus/belvedere | Belvedere Museum | CC0 | |
| | mus/munch | Munch Museum | Open | |
| | mus/larco | Museo Larco | Open | |
| | mus/awmm | Auckland War Memorial Museum | Open | |
|
|
