ESRI ArcGIS Desktop Certification Practice Test

To create an attribute domain using the Table to Domain tool in ArcGIS, one essential requirement is to have a field that contains the code values for the domain, which is typically the set of values that you want to limit your attribute field to. This ensures that the attribute is constrained to specific, predefined values in the dataset, enhancing data integrity and consistency.

Having a field containing descriptions for the domain values is also beneficial as it provides meaningful context for each code value. However, the primary field required to define the values in the domain is the one that contains the actual code values. The domain effectively organizes and categorizes the data based on these codes.

A field containing range values or metadata information may serve other purposes within the dataset or for documentation, but they do not satisfy the specific requirement needed for creating an attribute domain. In summary, while descriptions enhance understanding and usability of the domain values, the fundamental field that establishes the domain itself is the one holding the code values.