Can't find field "Parent Category" in DIXF for import of Category hierarchy

Dear 

In the DIXF , for the category hierarchy, i am choosing the Product category hierarchy but i am having hard time locating the parent field ,

in table ECORESCATEGORY you can clearly see the field PARENTCATEGORY  

while in DMFECORESCATEGORYHIERARCHY i don't find a field that resembles this 

my aim is to import the categories using DIXF , and to put only 

Category Code (Column 1)        Parent Category Code (Column 2)