フリー問題

問題文

A requirement needs both a fast single-object read for a card and a complex related-object read for a detail view. What Data Mapper strategy fits?

選択肢

1. Use one Turbo Extract for both, since it handles related objects too, so the procedure re-reads the payload every time.
2. Use a Turbo Extract for the fast single-object card and a standard Extract for the complex related-object detail view.
3. Use a Load for both, since reading is a write.
4. Use one standard Extract for both, accepting slower single-object reads, and this is assumed to hold regardless of the data volume or the user's context.