# Question $2.$ Please select valid relations $(10$ pt$.)$

a$.$ Relation$1$

$\backslash$table$[[$sNo$,$sName,sAddress$],[1,$John Smith,Texas, USA$]]$

$\backslash$table$[[2,$Zhou Wang,Beijing, China$],[3,$Deniz Yilmaz,Ankara, Turkey$]]$

b$.$ Relation$2$

$\backslash$table$[[$sNo$,$sName,sAddress$1,$sAddress$2],[1,$John,Texas,USA$],[2,$John,Beijing,China$],[3,$Peter,Ankara,Turkey$]]$

c$.$ Relation $3$

$\backslash$table$[[$sNo$,$sName,sAddress,sAddress$],[1,$John,Texas,USA$],[2,$John,Beijing,China$],[3,$Peter,Ankara,Turkey$]]$

d$.$ Relation$4$

$\backslash$table$[[$sNo$,$sName,sAddress$],[1,$John Smith,Texas, USA$],[2,$Zhou Wang,Beijing, China$],[2,$Zhou Wang,Beiiing, China$]]$