Where does the application store Pre and Post condition information related to processes?
The 'Pre' and 'Post' Conditions on a BPM Process Definition are stored in the 'ODF_FILTER_EXPRESSIONS' table.
With object_type_code being "BPM_DEF_STEPS'
And object_instance_id being the step condition id of the step (BPM_DEF_STEP_CONDITIONS.id) (not BPM_DEF_STEPS.id!)
For more information regarding database schema, use the Technical Reference Guide.