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[多选] In which two cases would you use an outer join? ()

A . The tables being joined have NOT NULL columns.
B . The tables being joined have only matched data.
C . The columns being joined have NULL values.
D . The tables being joined have only unmatched data.
E . The tables being joined have both matched and unmatched data.
F . Only when the tables have a primary key/foreign key relationship.

You are using an Automatic Storage Management (ASM) instance to manage the database files of your production database. After adding a new disk group to the ASM instance, you execute the following command:  ALTER DISKGROUP dg3 REBALANCE POWER 0; What would be the result of this command?() The rebalancing of the disk group would be stopped.。 The rebalancing of the disk group would be completed as fast as possible.。 The command would result in an error because the value of POWER cannot be 0.。 The rebalancing of the disk group would be completed without affecting the disk group DG3.。 The command would result in an error because the disk groups cannot be manually rebalanced.。 工程成本中,直接成本由人工费、材料费、机械使用费和()组成。 其他直接费。 间接费。 措施费。 税费。 You want to import schema objects of the HR user using Oracle Data Pump from the development database,DEVDB, to the production database, PRODDB. A database link devdb.us.oracle.com is created betweenPRODDB and DEVDB. You execute the following command on the PRODDB database server:$ impdp system/manager directory = DB_DATAdumpfile = schemas.datschemas = hr flashback_time = "TO_TIMESTAMP(’25-08-2007 14:35:00’, ’DD-MM-YYYY HH24:MI:SS’)"The command fails displaying the following error:ORA-39001: invalid argument valueORA-39000: bad dump file specification ORA-31640: unable to open dump file "/home/oracle/schema/schemas.dat" for read ORA-27037: unable toobtain file status What would you do to overcome the error() Add the user, SYSTEM, to the schemas option.。 Add the network_link = devdb.us.oracle.com option.。 Change the dumpfile option to schema.dat@devdb.us.oracle.com.。 Replace the schemas option with the network_link = devdb.us.oracle.com。 Replace the dumpfile option with the network_link = devdb.us.oracle.com。 美国微软公司起诉亚都公司软件侵权案,使亚都面临近千万的赔偿。双方陷入的危机属于()。 宏观环境制约型危机。 供应危机。 品牌危机。 产品质量危机。 You execute the following command to audit the database activities:  SQL> AUDIT DROP ANY TABLE BY scott BY SESSION WHENEVER SUCCESSFUL;  What is the effect of this command?() One audit record is created for the whole session if user SCOTT successfully drops one or more tables in his session.。 One audit record is created for every session when any user successfully drops a table owned by SCOTT.。 One audit record is created for each successful DROP TABLE command executed by any user to drop tables owned by SCOTT.。 One audit record is generated for the session when SCOTT grants the DROP ANY TABLE privilege to other users in his session.。 One audit record is created for each successful DROP TABLE command executed in the session of SCOTT.。 In which two cases would you use an outer join? ()
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