Workflow process state
| Column | Type | References | Comments |
| id | Integer | Primary key | |
| guid | String | ||
| vdb_id | Integer | ||
| name | String | Short name | |
| description | String | Description | |
| is_start_state | Boolean (t or f) | Is this a 'start' state? | |
| is_end_state | Boolean (t or f) | Is this an 'end' state? An end state means that the process is assumed to be completed. | |
| process_type_id | Integer | db_process_type.id | |
| deleted_on | Date | Date this state was deleted | |
| position | Integer | Order in its siblings |