单选题You work as a database administrator for Supportcenter.cn. Your database is in NOARCHIVELOG mode. The database has been configured with three redo logs groups， and there have been five log switches. You lost one non-system-critical data file from your database. Which method would you use to recover the data file？（）ARestore all the data files and open the databaseBCreate the data file and perform tablespace recoveryCNo need to restore any file， just recover the databaseDRestore only the system data file and recover the databaseERestore only lost date file and performtablespacerecovery
单选题
You work as a database administrator for Supportcenter.cn. Your database is in NOARCHIVELOG mode. The database has been configured with three redo logs groups， and there have been five log switches. You lost one non-system-critical data file from your database. Which method would you use to recover the data file？（）
A
Restore all the data files and open the database
B
Create the data file and perform tablespace recovery
C
No need to restore any file， just recover the database
D
Restore only the system data file and recover the database
E
Restore only lost date file and performtablespacerecovery
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