private void processRelAttributes(String relName, ORASSNode entityNode) throws MainException{
		List<ColumnDetail> cols = dbCache.getDetailsOfColumns(relName);
		List<String> foreignKeys = dbCache.getNamesOfForeignKeys(relName);
		for(int i = 0; i< cols.size(); i++){
			ColumnDetail col = cols.get(i);
			if(!foreignKeys.contains(col.getName())){
				entityNode.addRelAttribute(col);
			}
		}
	}