private void updateTableMembership() {
		
		topTable.clear();
		bottomTable.clear();
		
		for ( String rowItem : topOfTableRow ) {
			
			for ( String columnItem : columns) {
				
				addToTopOfTable(rowItem, columnItem, issueMembershipQuery(rowItem, columnItem));
				
			}
			
		}
		
		for ( String rowItem : bottomOfTableRow ) {
			
			for (String columnItem : columns) {
				
				addToBottomOfTable(rowItem, columnItem, issueMembershipQuery(rowItem, columnItem));
				
			}
			
		}
		
	}