フリー問題

問題文

An analyst must find which stored objects in a database hold order data, and which columns those objects expose. Which pair of steps gives that information in Impala?

選択肢

1. The list of stored objects comes from the COMPUTE STATS call issued against the database, and the columns with their types come from the DESCRIBE statement issued during the same inspection.
2. The list of stored objects comes from the SHOW TABLES statement issued against the database, and the columns with their types come from the DESCRIBE statement issued during the same inspection.
3. The list of stored objects comes from the COMPUTE STATS call issued against the database, and the columns with their types come from the REFRESH call issued during the same inspection.
4. The list of stored objects comes from the SHOW TABLES statement issued against the database, and the columns with their types come from the REFRESH call issued during the same inspection.