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com.sap.sql.CardinalityViolationException 
com.sap.sql. CardinalityViolationException extends java.sql.SQLException
The CardinalityViolationException class is a subclass of
java.sql.SQLException that is
used to indicate that a
single row query
returns a result set with more than one row. The
SQLState value for every instance
of CardinalityViolationException is
"21000".
