NISO Plus 2024 Global/Online

To support negotiations, contract management and national open access strategies with high quality data, the Dutch library consortium UKB started building a data warehouse in 2020. In the past four years this datahub grew both in scope and impact. It contains metadata from almost half a million Dutch research articles from 2018 till present, obtained from 30+ sources. More than 200 institutions, 700 publishers and 21.000 journals are covered. Challenges in the quality and availability of metadata are addressed by combining multiple sources and the usage of business rules.