フリー問題

問題文

A query reads one small member out of a large body of data held in a JSON column. Why can the server reach that member quickly?

選択肢

1. The server keeps that value in a keyed indexed encoding so the lookup stays inexpensive.
2. The server keeps that value in a loose readable encoding so the lookup stays inexpensive.
3. The server keeps that value in a zipped protected encoding so the lookup stays inexpensive.
4. The server keeps that value in a preparsed compact encoding so the lookup stays inexpensive.