final Table newRefTable = targetAIS.getTable(refTableName);
if(newRefTable == null) {
throw new NoSuchTableException(refTableName);
}
if(!newRefTable.getGroup().equals(newGroup)) {
throw new TableNotInGroupException(refTableName);
}
final Column column = indexCol.getColumn();
final Column newColumn = newRefTable.getColumn(column.getName());
if(newColumn == null) {