column.setCellEditor(new DefaultCellEditor(referencingTableComboBox));
// column.setCellRenderer(new DefaultTableCellRenderer());
column.setPreferredWidth(250);
} else if (MetadataTableModel.REFERENCING_COLUMN_INDEX == i) {// ReferencingTableColumn
JComboBox referencingTableColumnComboBox = new JComboBox();
referencingTableColumnComboBox.addPopupMenuListener(new TableColumnComboBoxPopupMenuListener(this));
column.setCellEditor(new DefaultCellEditor(referencingTableColumnComboBox));
column.setPreferredWidth(250);
} else if (MetadataTableModel.DELETE_RULE_INDEX == i) {// Referential Triggered Action
JComboBox deleteRuleComboBox = new JComboBox(new DeleteRuleComboBoxModel());
column.setCellEditor(new DefaultCellEditor(deleteRuleComboBox));