Esri ArcGIS Pro Foundation Certification Practice Test

When using the ArcGIS Pro Identity method, how can you manage the numeric values in the attribute table?

1. Merge rules

2. Field mapping

3. Ratio policy

4. Value appending

The correct answer is: Ratio policy

The correct answer is the ratio policy. The ratio policy is used in the context of the Identity method to manage overlapping features and how attribute values are combined or calculated when two sets of features are merged. When features from two layers are combined, the ratio policy specifically addresses how numerical values associated with attributes are treated during the process. This is particularly useful for ensuring that the numerical results accurately represent the spatial relationships and proportions between the features being analyzed. In contrast, other methods such as merge rules and field mapping focus more on how features are combined or restructured rather than specifically addressing the management of numerical values in the generated attribute table. Merge rules often relate to the conditions under which features are combined, while field mapping is more about matching attribute fields from the source datasets to the resulting dataset. Value appending, while it may refer to adding values to a field, does not encapsulate the nuanced management of numerical calculations like the ratio policy does. Thus, the ratio policy stands out as the most relevant approach in this context.