TEST :Identity-constraint Definition Schema Component : selector element, content of selector and field
http://www.w3.org/TR/2004/REC-xmlschema-1-20041028/#cIdentity-constraint_Definitions
| Item | Value | 
|---|---|
| title | idD019 - idD019 | 
| name | idD019 | 
| source | ../idD019.xsd | 
| schemaName | ../idD019.xsd | 
| keywords | schema negative | 
| package | javasoft.sqe.tests.identityconstraint.idd019 |