CHALLENGE

ACTIVITY

$2\mathrm{.}12\mathrm{.}1$: Constraints.

Jump to level $1$

Add a constraint called UniqueCode that ensures the ISOCode $2$ and ISOCode$3$ comoination is unique

GREATE TABLE COUNLYY

I SOCOde$2$ CHAR $(2),$

ISOCOCAB B$.$ GFAR $(3)$

Name VARGHAR. $(60)$

Area $\frac{?}{\text{b}\text{a}\text{r}}($ FOAT, $)$

Your code goes here

;

Complete the statement to drop the above bonstraint

ALTER TABLE Country