how to retrieve process definition

[narugin jm]

hello, I am very new to jBPM and also non-Java person. I cloned the repo containing jboss workbench docker files here https://github.com/jboss-dockerfiles/business-central and ran the docker-compose command using the jbpm-full-postgres.yml file. Now I have a running jBPM with postgres database.

I defined a simple process using the business-central workbench, yet could not find any process definition data stored in the postgres database. I know that process definition information is accessible through API under this endpoint /server/containers/{containerId}/processes/definitions/{processId}, but I just want to double check whether this data is also available in the db.