フリー問題

問題文

A steward builds a hierarchy of suppliers and their plants, and while adding child records has to state the one shape of relationship that the hierarchy must never end up with. Later that week an import that the same steward started dies at the transform step, and the steward wants to read the records that the step skipped, which means downloading one particular log. Which pairing correctly states what a record must not end up as, and the log that carries the skipped records?

選択肢

1. A record that the steward adds may well end up as a child of itself, and the skipped records of a failed transform step are in the sessions log.
2. A record that the steward adds must not end up as a child of itself, and the skipped records of a failed transform step are in the sequence log.
3. A record that the steward adds may well end up as a child of itself, and the skipped records of a failed transform step are in the sequence log.
4. A record that the steward adds must not end up as a child of itself, and the skipped records of a failed transform step are in the sessions log.