フリー問題

問題文

A requirement states that a support agent has to see a partial value while an analyst working in the same database has to see the whole value. Which mechanism fits?

選択肢

1. A masking definition that replaces the stored values inside a copy of the database.
2. A tablespace encryption that covers the table holding those values.
3. A redaction policy whose condition tells the two groups apart at the moment the query is answered.
4. A row filter that removes the rows which the support agent must not read.