Creating collection relationships

In peer-to-peer relationships, no feature's existence is dependent on another. Collections are considered a type of peer-to-peer relationship and can be grouped into two different object classes: aggregations (C_AGGR) or associations (C_ASSO).

Association objects (C_ASSO) depict at least one feature that, when associated, better represents certain navigational situations. For example, a buoy that marks a wreck can be associated in S-57 to help the mariner see that a danger lies in the area. The buoy is not dependent on the wreck nor is the wreck dependent on the buoy.

Aggregation objects (C_AGGR) are collections of features that form a higher-level collection object that better describes a system or defines a larger area. For example, an aggregation relationship can be used to form a traffic separation scheme from traffic separation lane parts, boundaries, and so forth. In the geodatabase, the collection object is stored in the PLTS_COLLECTIONS table, and its relationships to the features that make up the collection are stored in the PLTS_FREL table.

Steps:

1. Start ArcMap.
2. On the main menu, click Customize > Toolbars > Production Editing.
3. On the main menu, click Customize > Toolbars > Nautical.
4. Click the Production Start Editing button on the Production Editing toolbar.
   Note:

   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.

   Tip:

   If the Create Attributes, Update Attributes, or Metadata Attributes window does not appear when you start an edit session, click the Show/Hide Attributes button on the Manage Features window.

5. Select features from which to create one relationship.
6. Click the Relationship Manager button on the Nautical toolbar.

   The Relationship Manager window appears.
7. Right-click Collection(s) in the tree view and click Create.
8. Choose the collection type.
9. Click OK.

The new collection relationship appears in the tree view of the Relationship Manager window.