how data will store in sap ecc mara table

hi all,

i am new to sap mdg.

if i create material reuest then data will store in staging area.but after aproval of req .wht happen?

means in mara table how these entries are stored which are created by create request application in sap mdg

is there any procedure or coding required to post data from mdg to sap ecc standard tables.

please reply

kanchan