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:
gunzip mus/cleveland.folio.sqlite.gz
sqlite3 mus/cleveland.folio.sqlite
-- 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:
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:
SELECT sql FROM sqlite_master WHERE type = 'table' AND name = 'item';
Source
Data is normalized from open-access museum APIs by 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 |