English to Dutch Tech/Engineering IT (Information Technology) Data Vault Modeling

This term occurs in the description of a course in Data Vault Modeling. Does anyone know the Dutch equivalent for the term 'keyed hubs' (in this context)? To my knowledge, the preceding term is best left untranslated and written as 'multi-master' rather than 'multi/master'. TIA!

The course starts with exploring the advanced topics of real-world applications, in which Data Vault models will be changed, altered, and adjusted to meet the needs of the enterprise. We discuss the dangers of breaking modeling standards (what happens when...), and the impact of re-work in the design foundation. The discussion continues to cover components around Link to Link, and *Multi/Master keyed hubs*. We provide in-depth information around the best practices of solving real-world problems.