Checkpointing would enable {TAIL ~ the relational database system} to implement {HEAD ~ restartable queries}, and thus database performance is increased 
Checkpointing would enable { TAIL ~ the relational database system } to implement { HEAD ~ restartable queries } , and thus database performance is increased
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH