TEST :Identity-constraint Definition Schema Component : key element, content of simpleType
http://www.w3.org/TR/2004/REC-xmlschema-1-20041028/#cIdentity-constraint_Definitions
| Item | Value | 
|---|---|
| title | idB052 - idB052 | 
| name | idB052 | 
| source | ../idB052.xsd | 
| schemaName | ../idB052.xsd | 
| keywords | schema negative | 
| package | javasoft.sqe.tests.identityconstraint.idb052 |