Implement TruncateQuery.
Enable QueryResult to not hold a result set.
Implement CreateQuery into new Driver system.
Implement IndexQuery into new Driver system.
Implement AlterQuery into new Driver system.
Implement DropQuery into new Driver system.
Remove now obsolete BuildQuery from new Driver system.
Update execQuery and updateQuery to be compatible with new Driver system.
Update create() methods to contain new Queries too.
Minor code cleanup.
Non data returning queries should use updateQuery!