フリー問題

問題文

A mapping must attach the current price to every order line from a price table that holds exactly one row per product. The team debates a Joiner against a Lookup for that step. Which line of reasoning is sound?

選択肢

1. The Lookup fits because the price table returns the dual match per product, and tuning the Joiner for speed would invite the reporting burden the requirement never needed.
2. The Lookup fits because the price table returns the onetoone match per product, and tuning the Joiner for speed would invite the presorting burden the requirement never needed.
3. The Lookup fits because the price table returns the onetoone match per product, and tuning the Joiner for speed would invite the reporting burden the requirement never needed.
4. The Lookup fits because the price table returns the dual match per product, and tuning the Joiner for speed would invite the presorting burden the requirement never needed.