Using conditional filtering via the Parameter Condition Definition dialog or data mapping via several transformers are both valid approaches.

• A. FALSE
• B. Only one is valid
• C. Neither are valid
• D. TRUE

Answer: (D)

In FME you can implement conditional behavior in more than one way, and both are valid. The Parameter Condition Definition dialog lets you tie a parameter to a boolean expression so that the transformer’s behavior is enabled or bypassed based on runtime conditions. This is useful when you want to control whether a particular operation runs without changing the data flow itself. On the other hand, mapping data through several transformers follows the data-flow approach: you route features into different branches and apply different attribute mappings or transformations only on the appropriate branch. This explicit, branch-based conditional logic is a common way to handle complex rules.

Since either approach can achieve conditional processing, the statement is true.