Table used to store children custom objects!!

Hi,

We created Custom object "Proposal" and created child custom object from the parent object with name "Payment Plan"

The parent custom object "Proposal" store its records on the table "MOT_REF_ENTITIES" and its data can be retrieved successfully.

The problem with the child custom object "Payment Plan". I can not find it "MOT_REF_ENTITIES" or "MOT_REF_ENTITIES_XM" as per the documentation, although it has many records on the user interface.

Which table is used to store child custom objects record??


Thanks,

Wessam