1) You need to use || instead of &:
SELECT SURNAME || ' ' || FORENAME AS FULLNAME FROM EMPLOYEE_DATA
I didn't know & can be used to concatenate text in MS Access. I will
add a feature request.
2) Alias column names: See
http://h2database.com/html/faq.html#column_names_incorrect : "If you
need compatibility with those databases, use the Compatibility Mode,
or set the system property h2.aliasColumnName."
To set a system property, see the top of the page:
http://h2database.com/javadoc/org/h2/constant/SysProperties.html
Regards,
Thomas