Consider a relations database containing the following schernas. Catalogue \begin tabular}{ccc} Whline sno & poo & cost Thline $S_{1}$ & SP_{1}$ & 150 W Whline$s_{1}$ & SP_{2}$ & 50 W Whline $s_{1}$ & SP_{3}$ & 100 W Whline $s_{2}$ & SP_{4}$ & 200 Whline$S_{2}$ & $P_{5} $ & 250 W Whline$S 35 & $P_{1}$ & 250 W Whline$S 35 & $P_{2}$ & 150 W Whline$S 35 & $P_{5}$ & 300 W Whline$S 3$ & $P 4$ & 250 W Whline \end{tabular) Suppliers Parts \begin{tabular}{ICICIC) Whline pas & puame & part spec: W Whline Pl & Tahle & Wood Whline P2 & Chair & Wood Whline P3 & Tahle & Stecl Whline P4 & Almirah & Sted 1 Whline P5 & Almirah & Wood \end{tabular) The primary key of each table is indicated by uncelining the constituent fields. The number of nows neturned by the above sol. query is CS. SD.051