> For the complete documentation index, see [llms.txt](https://fairsharing.gitbook.io/fairsharing/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://fairsharing.gitbook.io/fairsharing/fair-assistance/fair-enabling-databases/fair-f1-for-database-evaluation.md).

# FAIR F1 for database evaluation

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## FAIR Principle F1: metadata are assigned persistent, globally unique and resolvable identifiers

<https://doi.org/10.25504/FAIRsharing.a2cea7>

FAIR Principle F1 requires that (meta)data are assigned identifiers that support unambiguous identification and long-term reference. Within the ARK-based benchmarks, this principle focuses on database identifier practices and the FAIR-enabling qualities those practices provide for content stored within databases.

Persistent, globally unique, and resolvable identifiers are fundamental FAIR-enabling characteristics because they support discovery, citation, interoperability, machine navigation, and long-term stewardship of digital objects. Databases that assign identifiers with these qualities to at least a subset of their records help ensure that database content can be reliably referenced and accessed over time.

The metrics associated with the ARK-based benchmarks evaluate database identifier practices relating to persistence, global uniqueness, and resolvability.

**Database FAIR-enabling characteristics**&#x20;

<table><thead><tr><th width="101.7265625">Context</th><th width="225.046875">Database FAIR-enabling characteristic</th><th>FAIRsharing operationalisation</th><th>Metric</th></tr></thead><tbody><tr><td>🏛</td><td>Database assigns persistent identifiers to at least some records</td><td>Linked identifier schema records with persistence guarantees (see our <a href="/pages/FVNnrNhlgwhWMdL8Y2SP">GUPRI definition</a>).</td><td><a href="https://doi.org/10.25504/FAIRsharing.432cab">FAIR Metric - F1-PID - Metadata - Persistent identifiers for database content</a></td></tr><tr><td>🏛</td><td>Database assigns globally unique identifiers to at least some records</td><td>Linked identifier schema records with global uniqueness guarantees (see our <a href="/pages/FVNnrNhlgwhWMdL8Y2SP">GUPRI definition</a>)</td><td><a href="https://doi.org/10.25504/FAIRsharing.faebf7">FAIR Metric - F1 - Metadata - Globally unique identifiers for database content</a></td></tr><tr><td>🏛</td><td>Database assigns resolvable identifiers to at least some records</td><td>Linked identifier schema records with resolvability guarantees (see our <a href="/pages/FVNnrNhlgwhWMdL8Y2SP">GUPRI definition</a>).</td><td><a href="https://doi.org/10.25504/FAIRsharing.6313ad">FAIR Metric - F1 - Metadata - Resolvable identifiers for database content</a></td></tr></tbody></table>

**Future work**

Future work could expand F1 to evaluate:

* database as a whole has a GUPRI
* metadata record under evaluation (here, the FAIRsharing record) has a GUPRI