ORBIS Database
- ORBIS database from Bureau van Dijk (BvD; 2010, 2013, 2016, 2019, 2022) focuses on corporate long term investment relations based on parent–subsidiary ownership links in every economic sector.
- Linkages between cities are built directly according to the ownership linkages between the owner and the subsidiary firms located in different cities.
- Cities are considered as nodes in networks constituted by oriented links of the relations between headquarters and subsidiaries, forming global groups of firms that are mostly totally interconnected.
- It is distinct from the interlocking world city network model and the interorganizational project approach, which focus on advanced producer services (APSs) and banks, respectively, and use a bipartite networks approach.