单选题 Your application regularly issues the following statement: SELECT * FROM BANK_ACCT WHERE ACCT_BALANCE BETWEEN 1000 and 10000; Which of the following database objects would be inappropriate for use with this statement?()
Materialized views
Indexes
Index-organized tables
Hash clusters
单选题 You have a long-running process you want to assign to a specific UNDO segment brought online for that express purpose. You are not using automatic UNDO management. What statement can be used for this task? ()
ALTER DATABASE
SET TRANSACTION
ALTER ROLLBACK SEGMENT
ALTER TABLE
单选题 If you wanted to find the name and location of your control files, you could find that information in each of the following locations except one. Which is it?()
V_CONTROLFILE_RECORD_SECTION
V_CONTROLFILE
V$PARAMETER
init.ora file
单选题 By default, checkpoints happen at least as often as().
Redo log switches.
UPDATE statements are issued against the database.
The SYSTEM tablespace is accessed.
SMON coalesces free space in a tablespase.
单选题 You are analyzing the components of the redo log mechanisms in your Oracle database. Which of the following purposes does the CKPT process serve?()
Writes buffers to disk
Writes current redo log number to datafile headers
Writes redo log information to disk
Reads information into memory for users
单选题 You are identifying dictionary objects in the Oracle database. Which of the following is a view in the data dictionary?()
V$DATABASE
DBA_TABLES
SYSAUD$
EMP
单选题 To determine the space allocated for temporary segments, the DBA can access which of the following views? ()
DBA_TABLESPACES
DBA_TABLES
DBA_SEGMENTS
DBA_FREE_SPACE
单选题 Which of the following choices identifies a database component that will be used for multiplexing control files?()
V$CONTROLFILE
V$DATABASE
init.ora
DBA FILES
单选题 You are trying to determine how many disk sorts are happening on the database right now. Which of the following dictionary tables would you use to find that information?()
V$SESSION
V$SYSSTAT
DBA_SEGMENTS
V$SORT_USAGE
单选题 You issue the following command in Oracle: CREATE TABLESPACE DAT_TBS DATAFILE "dat_tbs.dbf" SIZE 2M;. Later queries against the database reveal that the tablespace is located in the /u01/oradata/oracle directory. Which of the following choices identifies how Oracle likely determined what directory to place dat_tbs.dbf file in?()
DB_CREATE_FILE_DEST
DB_CREATE_ONLINE_LOG_1
DB_CREATE_ONLINE_LOG_2
The directory is an operating system-specific default value in Oracle that can neigher be specified manually nor changed
在任何情况下,伸缩调节器处轨距的要求为()。
人类有两套影响学习的记忆系统:陈述性记忆和程序记忆。陈述性记忆是对事实或者词汇之类基本认识的记忆。而程序记忆,就是一个人“不劳而获”的记忆。程序记忆是人养成习惯和习得技巧的方式,比如骑自行车。在很多时候,这种学习是无意识的。人们用早期发育的程序记忆系统来学习复杂的东西,比如语法规则。帮助人们学习词汇的陈述性记忆系统,则需要更多时问完成发育。儿童拥有程序记忆系统,并且不受陈述性记忆系统的干扰。由此可以推出()。
宋末元初四大家
公平目标的实现可以通过()实现。
荟萃分析
人员安全疏散分析的性能判定标准为:可用疏散时间(A.SET)必须()必需疏散时间(RSET)。
预防HIV感染的主要措施应当为( )
简述我国混合型债券市场的发展状况。
造成水中某些污染物在生物体内含量大大高于水体中的浓度的生物放大作用是指()
输血的适应证中,不包括()