フリー問題

問題文

You validate a streaming mapping that merges pipelines and looks up reference data. Which pair completes this sentence correctly?

選択肢

1. a Union transformation that sits right after a streaming source with no Window transformation between them is turned down by the validator, and the condition kind on a passive Lookup transformation that makes a second such transformation in the same pipeline invalid is inequality
2. a Union transformation that sits right after a streaming source with no Window transformation between them is turned down by the validator, and the condition kind on a passive Lookup transformation that makes a second such transformation in the same pipeline invalid is null-value
3. a Union transformation that sits right after a streaming source with no Window transformation between them is let through by the validator, and the condition kind on a passive Lookup transformation that makes a second such transformation in the same pipeline invalid is inequality
4. a Union transformation that sits right after a streaming source with no Window transformation between them is let through by the validator, and the condition kind on a passive Lookup transformation that makes a second such transformation in the same pipeline invalid is null-value