Hexon prefers to create a custom interface (see sending data in bulk and sending incremental updates) between the inventory management system and DV. However it is also possible to exchange interformation with DV directly using the API. Object information needs to be supplied in a format predetermined by Hexon and all the mapping and conversion needs to be done by the inventory management system.
Objects, as well as all related information (images, options, etc) need to be added, updated and removed individually. The API offers no bulk or batch options.
The API offers both SOAP (XML) and REST (XML or JSON) interfaces.
The API can be used even if a custom interface is used, but it will be read-only for objects.