DB_op: update param names, doc
DB_op: update param names, doc

tlevine/rhizi,cben/rhizi,shlomif/rhizi,Rhizi/rhizi,yuvadm/rhizi,yuvadm/rhizi,tlevine/rhizi,shlomif/rhizi,tlevine/rhizi,ozFri/rhizi,ozFri/rhizi,ozFri/rhizi,ozFri/rhizi,shlomif/rhizi,yuvadm/rhizi,yuvadm/rhizi,Rhizi/rhizi,Rhizi/rhizi,shlomif/rhizi,cben/rhizi,tlevine/rhizi,cben/rhizi,Rhizi/rhizi,cben/rhizi