I have a Scala App running on a Service, using a PostgreSql Service, Tables are being created by the database management plugin (Slick)

however, need to edit a particular table and I cant find it!

postgres service:

apiVersion: v1
kind: Service
metadata:
  name: core-db
spec:
  ports:
    - port: 5432
  selector:
    app: core-db
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: core-db
spec:
  template:
    metadata:
      labels:
        app: core-db
    spec:
      containers:
        - image: "image"
          name: core-db
          imagePullPolicy: IfNotPresent
          env:
            - name: POSTGRES_USER
              value: postgres
            - name: POSTGRES_PASSWORD
              value: postgres
          ports:
            - containerPort: 5432
              name: core-db
          volumeMounts:
            - name: core-storage
              mountPath: /var/lib/postgresql/db-data
      volumes:
          - name: core-storage
            persistentVolumeClaim:
                claimName: core-pv-claim
      imagePullSecrets:
        - name: regcred
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: core-pv-claim
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 100Mi

I get in the pod:

kubectl exec POD -it -- psql -U postgres

but \d shows no relations

What I am doing wrong, where is my data after all ?

EDIT

\l
postgres  
app   
template0 
template1 

\c postgres
\dt
No relations found.

\c app
\dt
No relations found.