Consider a database $($suppliers$-$parts$-$projects$)$ with the following schema:

S $($SH$,$ SNAME, STATUS, CITY $)$

P $($P#$,$ PNAME, COLOR, WEIGHT, CITY $)$

J $(JH,$ JNAME, CITY $)$

SPJ $($S#$,$ P#$,$ J#$,$ QTY$)$

Suppliers $($S$),$ parts $(P),$ and projects $(J)$ are uniquely identified by supplier number $),$ part number $(P$#$),$ and project number $($J#$),$ respectively. Below are some sample data of the database.

$\backslash$table$[[$s$,--,--.-,-$cdots,$-...-.,\frac{?}{\text{b}\text{a}\text{r}}(s$#$),$P#$,--,QTY$