One parent column an IS-A child's base view selects from a parent's base table.
The join alias of the parent's base table in the child's view (__mj_isa_p1 is the direct parent).
__mj_isa_p1
The parent's field.
The parent entity whose base table holds the column.
One parent column an IS-A child's base view selects from a parent's base table.