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CHALIENGE

AcTVVITY

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

Jump to level $1$

Add a constraint called UniqueCode that ensures the ContinentCode and ISOCode$3$ combination is unique.

CREATE TABLE Country $($

Continentcode CHAR $(2),$

ISOCOde $3$ CHAR $(3),$

Name VARCHAR $(60),$

Area FLOAT,

Your code goes here $*/$

;

Complete the statement to drop the above constraint.