单项选择题
A. An error is produced.
B. The table and all related objects are compacted and the position of the high-water mark (HWM) for the table is adjusted
C. The table and related indexes are compacted but the position of the high-water mark (HWM) for the table remains unchanged
D. The unused space in the table is reclaimed and returned to the tablespace and the data manipulation language (DML) triggers on the table are fired during the shrinking process
多项选择题 Which two statements are true about a job chain?（）
单项选择题 Note the following statements that use flashback technology: 1. FLASHBACK TABLE <table> TO SCN <scn>; 2. SELECT * FROM <table> AS OF SCN 123456; 3. FLASHBACK TABLE <table> TO BEFORE DROP; 4. FLASHBACK DATABASE TO TIMESTAMP <timestamp>; 5. SELECT * FROM <table> VERSIONS AS OF SCN 123456 AND 123999; Which of these statements will be dependent on the availability of relevant undo data in the undo segment?（）
单项选择题 You are creating a database by using Database Configuration Assistant (DBCA). You have chosen the File System option as the storage mechanism. What would be the result of choosing this option?（）
