As the hash values are stored in the first table, they are compared to {HEAD ~ the hash values} stored in {TAIL ~ the second table} to identify new connections 
stored in
As the hash values are stored in the first table , they are compared to { HEAD ~ the hash values } stored in { TAIL ~ the second table } to identify new connections
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH