Connecting two feature connection lines to a writer feature type input port will automatically join incoming features based on a shared key.

Connecting two feature connection lines to a writer feature type input port will automatically join incoming features based on a shared key.

• A. True
• B. False
• C. Cannot be determined
• D. Only with specific settings

Answer: (B)

In FME, features are not automatically merged across input ports unless you explicitly perform a join operation. The writer’s input port simply writes whatever features it receives; there’s no implicit key-based merging happening at that stage. To combine features on a shared key, you must use a transformer designed for joining, such as the Joiner (which merges features from two inputs based on a key) or a FeatureMerger, before sending the result to the writer. Without that explicit joining step, features arriving from separate lines are written as separate records with their own attributes.

In FME, features are not automatically merged across input ports unless you explicitly perform a join operation. The writer’s input port simply writes whatever features it receives; there’s no implicit key-based merging happening at that stage. To combine features on a shared key, you must use a transformer designed for joining, such as the Joiner (which merges features from two inputs based on a key) or a FeatureMerger, before sending the result to the writer. Without that explicit joining step, features arriving from separate lines are written as separate records with their own attributes.