Domains are restricting the list of possible values to be input by the editor of the data. For example, the Street_Type property could be restricted to just four values: Highway, Primary Road, Secondary Road, and Unpaved Road.

By default, the registration of an Oracle spatial table as a feature will define properties as Text Properties. To enhance this, Bentley Map provides the ability to identify lookup tables in Oracle and use them as XFM domain lists. This way, properties can be defined as pick lists (ComboBox Properties).

Configuring tables for use as domain lists is a two-step process:

• First, a lookup table needs to be either created or already present in the database;

• Second, a foreign key is added to formalize the relationship between the lookup table and the parent table.