32. Examine these commands and their output: • SQL> SELECT * FROM emp; • ENO ENAME • ---- ----- • 100 Adam • 101 Alan • SQL> INSERT INTO emp VALUES(102,'Ben"); • 1 row created. • SQL> COMMIT; • Commit completed. • SQL> UPDATE emp SET enam
31.Which two events always request the LGWR to write? A) when LGWR is notified by a server process that performs a Commit or ROLLBACK B) When PMON restarts a server process C) when DBWn writes dirty buffers D) when a log switch occurs E) when a check
30.Which is true when a database instance is shut down? A. Only transactional and normal modes wait for all uncommitted transactions to commit or rollback and then close the database. B. Immediate, transactional, and normal modes all result in a chec
23.Which two are true about data dictionary and dynamic performance views (v$ views)? A) All database users have access to ALL_* views. B) Data dictionary view output is subject to read consistency. C) The defining queries for Oracle supplied dynamic
22.You are planning a software installation for both Oracle Database 11g Release 1 and Release 2. You plan to have at lease one database for each release managed by Grid Infrastructure for a Standalone Server. Which three are true in this scenario? A
21.Which two are true about roles? A) A role can be password-protected. B) A role can be granted to another role. C) Only one default role can be granted to a user. D) A role can be granted only multiple system privileges not multiple object privileg
13.Which two are true about AWR snapshots? A) They are stored In the SYSAUX tablespace. B) They are not generated if STATISTICS_LEVEL Is set to TYPICAL. C) They can be modified by using DMLs. D) They can be retained forever. E) They are always create
11.Which three are true about UNDO data? A) It is used to roll back failed transactions. B) It is used to rewind a database by using FLASHBACK DATABASE. C) It is used to recover dropped tables by using FLASHBACK TABLE … TO BEFORE DROP. D) It is used
一.选择题 1.在登录Linux时,一个具有唯一进程ID号的shell将被调用,这个ID是什么(B)? A.NID B.PID C.UID D.CID 2.下面哪个目录存放用户密码信息(B) A./boot B./etc C./var D./dev 3.(D)不是流行的Linux操作系统. A.Red Hat Linux B.Mac OS C.Ubuntu Linux D.Red Flag Linux 4.关闭linux系统(不重新启动)可使用命令 (B) . A.Ctrl+Alt+Del B.
C#复习⑨ 2016年6月22日 14:28 C#考试题&参考答案:http://pan.baidu.com/s/1sld4K13 Main XML Comments & Pointer XML注释和指针 1.Special Comments 注释很重要!!! 2.XML Tags 有那么些类似于HTML的标签 Predefined Tags Main tags <summary> short description of a program element </summ
