“…This work is inspired by the previous works found in (Huang et al, 2008), (Herschel and Hernández, 2010), (Tran and Chan, 2010), (He and Lo, 2012), (Ma et al, 2006), (Liu et al, 2010), (Koudas et al, 2006) and (Ma and Mehrotra, 2007). In (Huang et al, 2008), Huang et al and in (Herschel and Hernández, 2010), Herschel et al propose to modify the original tuple values in the database so that missing tuples become part of the query output.…”