UDAL Queries

This section describes how to query the EMO-BON knowledge graph using UDAL (Universal Data Access Layer).

Overview¶

UDAL provides a unified interface for querying EMO-BON data across different sources and formats.

SPARQL Endpoint¶

The EMO-BON triple store exposes a SPARQL endpoint for querying the knowledge graph:

• Endpoint URL: sparql.emobon.embrc.eu or api.emobon.embrc.eu

• Query Language: SPARQL 1.1

Named Queries¶

UDAL provides a set of named queries for common data access patterns:

Using UDAL with VREs¶

Virtual Research Environments (VREs) can consume EMO-BON data through:

• UDAL named queries

• Semantic query + UDAL integration

Example Queries¶

Example SPARQL queries will be provided here to demonstrate:

• Retrieving observatory information

• Querying sample data

• Finding sequences by criteria

• Accessing analysis results