alter TABLE ScriptTargetOSLink
	add CONSTRAINT PK_ScriptTarggetOSLink 
		PRIMARY KEY  
					                       clustered
		(ScriptID, ScriptTargetOSID) 
go

alter table ScriptTargetOSLink
	add CONSTRAINT CHK_ScriptTargetOSLink_ScriptTargetOSID 
		CHECK(ScriptTargetOSID in ( 0,1,2,3))


