フリー問題

問題文

A history table is loaded once a month and is then read but never updated. Which statement about the two dictionary-based compression types is correct?

選択肢

1. Table compression needs a rebuild of the indexes to compress the rows while advanced row compression also compresses the index entries.
2. Plain compression needs a separate tablespace to compress the rows while advanced row compression also compresses the temporary segments.
3. Advanced row compression needs a direct path load to compress the rows while basic compression also compresses rows changed by the ordinary statements.
4. Basic compression needs a direct path load to compress the rows while advanced row compression also compresses rows changed by ordinary statements.