According to one embodiment, system 301 may store {HEAD ~ information} in {TAIL ~ a parallel manner} in the relational database 
in
According to one embodiment , system 301 may store { HEAD ~ information } in { TAIL ~ a parallel manner } in the relational database
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH