Removing a single item from a relationship

As needed, you can remove a related feature or table record from a related feature. This can occur when you need to change the table record or feature with which another feature is related. For instance, you may need to remove a relationship between a feature and a table record because the table record is related to a different feature. To create a relationship between a different feature and the table record, the relationship must be removed between the current feature and table record.

手順:

1. Start ArcMap.
   ヒント:

   If the ArcMap - Getting Started dialog box appears, you can open a new or existing map document. You can also check the Do not show this dialog box in the future check box and click Open.

2. If necessary, load data in the map.
3. On the main menu, click Customize → Toolbars → Production Editing.
4. Click the Production Start Editing button on the Production Editing toolbar.
   メモ:

   The Manage Features and Create Attributes, Update Attributes, or Metadata Attributes windows automatically appear when you start an edit session using the Production Start Editing tool.

   ヒント:

   If the Create Attributes, Update Attributes, or Metadata Attributes window does not appear when you start an edit session, click the Link Feature Manager To Attributes Window button on the Manage Features window.

5. Click the Update tab on the Manage Features window.
6. Select the feature for which you want to remove a related feature or table record.
7. Click the plus sign (+) to expand the feature node and view the relationship class.
8. Right-click the relationship node you want to remove and click Remove From Relationship.

ヒント:

If the field being used as the foreign key cannot accept null values, the item cannot be removed from the relationship.