You are working on a database that must be functioning 24 hours a day, 7 days a week. The databaseis configured in ARCHIVELOG mode. Which two options do you have for performing user-managed backups()
A. You can perform consistent backups only.
B. You can perform a complete database backup without shutting down the database instance.
C. You can back up data files only when all data files have the same SCN recorded in the control file.
D. You can back up only those data files whose headers are frozen by using ALTER TABLESPACE BEGINBACKUP or ALTER DATABASE BEGIN BACKUP commands.
某企业2014年12月31日应收票据的账面余额为150万元,已提坏账准备20万元,应付票据的账面余额为30万元,其他应收款的账面余额为15万元。该企业2014年12月31日资产负债表中"应收票据"项目的金额为()万元。
A. 115
B. 130
C. 100
D. 150