Where can you view the schema of your source data, i.e. the data you start with?

• A. The Transformer Gallery
• B. The writer entry in the Navigator
• C. The reader Feature Type dialog
• D. The writer Feature Type dialog

Answer: (C)

The input data’s structure is defined by the reader, so you view the source schema in the reader’s Feature Type dialog. This dialog lists the attributes (and their data types), geometry type, and coordinate system that come with the data you’re reading, giving you the exact schema of the source. The writer’s Feature Type dialog shows the output schema, not the input, and the other options aren’t about inspecting the source data’s structure.