Hi Roman,
there is a documentation* to the database, but it's not a diagram, if you need the diagram then the best way would be to create one yourself in the SSMS.
Relationships are maintained with proper keys, so the diagram basically builds itself.
Main tables you will need:
* WFElements
* WFElementDetails
* WFDocTypes
* WorkFlows
* WFConfigurations
* WFDefinitions
* WFApplications
* WFHistoryElements
* WFHistoryElementDetails
*https://developer.webcon.com/2025/resources/db/?PageSpeed=off