 Component : key category, field points to attribute used only within xsi:type substitution</td><td bgcolor="green">valid</td><td bgcolor="blue">invalid</td><td bgcolor="red">true</td></tr><tr><td>msData/identityConstraint/idH001.xml</td><td>TEST :Identity-constraint Definition Schema Component : keyref category, selector element evaluates to a node-set</td><td bgcolor="green">valid</td><td bgcolor="blue">invalid</td><td bgcolor="red">true</td></tr><tr><td>msData/identityConstraint/idH003.xml</td><td>TEST :