You can use wildcard expressions in the Source Dataset parameter to read multiple datasets with one reader.

• A. Sometimes
• B. True
• C. False
• D. Only for certain formats

Answer: (B)

Wildcard expressions in the Source Dataset parameter let a single reader open and process multiple datasets that match the pattern. For example, pointing the reader to a folder with many shapefiles using something like C:/data/*.shp makes FME iterate through each matching file and stream their features, all in one workflow. This capability is widely supported across many readers, so you can ingest an entire collection without creating separate readers. While some formats may have quirks or specific limitations, the general behavior in FME is to read multiple datasets with one reader when wildcards are used, making the statement true.