What is the purpose of the AttributeCreator transformer in this exercise?

• A. To create an HTML report for failed schemas.
• B. To filter for valid schemas.
• C. To create a message for each attribute added to the original schema.
• D. To compare the original and updated schemas.

Answer: (C)

The key idea here is that AttributeCreator is used to generate new attribute values on features. In this exercise it’s employed to build a descriptive message for each attribute that was added to the original schema. By configuring the transformer to craft a text string that notes the addition (for example, the attribute name and possibly its type or origin) and attaching that as a new attribute or passing it downstream, you create a per-attribute message that records what changed. This directly matches the goal of communicating what was added to the schema.

The other options describe tasks that require different tools: producing an HTML report would come from a reporting or HTML writer rather than AttributeCreator; filtering to keep only valid schemas is a decision step handled by a filter or tester; comparing the original and updated schemas is a separate comparison operation. AttributeCreator’s purpose is to create new attribute values, which in this exercise is used to generate the per-attribute messages.