OPERAS Metrics Database

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Dataset information

Country of origin
Updated
2026.02.06 00:00
Created
2026.02.06
Available languages
English
Keywords
Quality scoring

Dataset description

OPERAS Database Archive Description This archive contains a complete PostgreSQL database dump for OPERAS Metrics, a service that offers usage and impact information for published Open Access books. Designed with the nuanced needs of Social Sciences and Humanities in mind, OPERAS Metrics consolidates diverse data sources into a single, transparent interface. The database supports the aggregation of metrics not only from publisher websites but also from multiple sites where books are available, providing comprehensive impact assessment for SSH scholarly publications. Database Structure The database (operas_db) is organized in a hierarchical structure with strict dependency ordering: Reference Tables: continent: Geographic continental classifications locale: Language and regional locale definitions namespace: Metadata namespace classifications source: Data source identifiers type: Metric and data type definitions version: Version tracking information Dependent Tables: country: Country data (depends on continent) measure: Research assessment metrics and indicators (depends on namespace, source, type, version) publisher: Publisher information measure_description: Multilingual descriptions of measures (depends on measure and locale) event: Event-based data linked to measures and countries (depends on measure and country) Supporting Data: doi_to_publisher: DOI prefix to publisher name mappings (includes dedicated CSV import) Contents database_creation.sh: Automated restoration script 170936/: Directory containing SQL files schema.sql: Complete database schema with tables, constraints, and indexes Individual .sql files for each table's data prefix_publishers.csv: DOI prefix mappings for publisher identification
European data infrastructure with broad catalog discovery, free evaluation access and production-grade API options.
190K+
indexed dataset pages
32
countries and EU institutions
2019
API-first since
Free API quota
for evaluation and prototypes
SLA
history and push on production APIs
FAQ

Questions before production use

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Maintained APIs include update metadata where available. For production integrations, we can add history, monitoring and push updates so changes are easier to detect and act on.
Production APIs can add SLA, stable identifiers, versioning support, history, push updates and direct support around the data your product or AI workflow depends on.

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