Which statement best characterizes dynamic schema in FME?

• A. It always writes with a fixed, pre-defined schema
• B. It adapts to incoming data schema and may be customized
• C. It ignores incoming schema completely
• D. It only applies to geometry types

Answer: (B)

Dynamic schema means the data’s structure can change to match what comes in, and you can control how that structure is applied or transformed. In FME, this lets a writer or transformer adjust to varying attribute names and types on the fly, rather than forcing every feature to fit a single, fixed schema. You can also customize how incoming fields are mapped, renamed, or converted, so the produced schema can be adapted to the target needs without predefining every detail upfront.

This is why the statement is the best answer: it captures both the adaptability to the incoming data and the option to tailor the mapping to your workflow. By contrast, insisting on a fixed pre-defined schema ignores the dynamic nature of incoming data; saying it ignores the incoming schema is the opposite of what dynamic schema does; and limiting it to geometry types only misses that dynamic schema also governs attributes and their data types.