TEST :Identity-constraint Definition Schema Component : keyref element, content of field
http://www.w3.org/TR/2004/REC-xmlschema-1-20041028/#cIdentity-constraint_Definitions
| Item | Value | 
|---|---|
| title | idC050 - idC050 | 
| name | idC050 | 
| source | ../idC050.xsd | 
| schemaName | ../idC050.xsd | 
| keywords | schema negative | 
| package | javasoft.sqe.tests.identityconstraint.idc050 |