多选题Which four are correct guidelines for naming database tables?（）AMust begin with either a number or a letter.BMust be 1-30 characters long.CShould not be an Oracle Server reserved word.DMust contain only A-Z, a-z, 0-+, _, *, and #.EMust contain only A-Z

题目
多选题
Which four are correct guidelines for naming database tables?（）
A

Must begin with either a number or a letter.

B

Must be 1-30 characters long.

C

Should not be an Oracle Server reserved word.

D

Must contain only A-Z, a-z, 0-+, _, *, and #.

E

Must contain only A-Z, a-z, 0-9, _, $, and #.

F

Must begin with a letter.

相似考题

1.Which four are correct guidelines for naming database tables? ()A. Must begin with either a number or a letter.B. Must be 1-30 characters long.C. Should not be an Oracle Server reserved word.D. Must contain only A-Z, a-z, 0-+, _, *, and #.E. Must contain only A-Z, a-z, 0-9, _, $, and #.F. Must begin with a letter.

2.下面哪个选项可以表示文件abCD.ef()。A.a[a-z][A-F]？.*B.*.e？C.*[A-Z].efD.[a-zA-Z0-9].*

3.What are the four steps， in their correct order， to mitigate a worm attack？（）A、contain，inoculate，quarantine，and treatB、inoculate，contain，quarantine，and treatC、quarantine，contain，inoculate，and treatD、preparation，identification，traceback，and postmortemE、preparation，classification，reaction，and treatF、identification，inoculation，postmortem，and reaction

4.我国互联网络域名体系中各级域名中不可以包含的字符是( )。A．字母(A-Z，a-z，大小写等价)B．数字(0-9)C．连接符(-)D．问号(?)

参考答案和解析
正确答案： D,B
解析： 暂无解析
更多“多选题Which four are correct guidelines for naming database tables?（）AMust begin with either a number or a letter.BMust be 1-30 characters long.CShould not be an Oracle Server reserved word.DMust contain only A-Z, a-z, 0-+, _, *, and #.EMust contain only A-Z”相关问题

  • 第1题：

    Choose the two correct statements regarding Oracle WebLogic Server（）

    • A、 a server instance can be associated with multiple machines
    • B、 a machine can be associated with multiple server instance 
    • C、 a server instance can be associated with only a single machine 
    • D、 a machine can be associated with only one server instance

    正确答案:B,C

  • 第2题：

    下面哪个选项可以表示文件abCD.ef（）。

    • A、a[a-z][A-F]？.*
    • B、*.e？
    • C、*[A-Z].ef
    • D、[a-zA-Z0-9].*

    正确答案:A,B,C

  • 第3题：

    Which two statements are correct about routing tables in JUNOS?（）

    • A、There are separate tables for IPv4 and IPv6 called inet.0 and inet6.0 respectively.
    • B、They only contain the best possible route to each destination.
    • C、All running protocols can populate the routing tables at the same time.
    • D、Routes with the highest preference value are placed as active routes in the routing table.

    正确答案:A,C

  • 第4题：

    The DB_BLOCK_CHECKING initialization parameter is set to OFF. 数据库块检测初始化参数被设定为关  Which block checking would be performed?（）

    • A、The Oracle database will perform block checking for the index blocks only 
    • B、The Oracle database will not perform block checking for any of the data blocks 
    • C、The Oracle database will perform block checking for the default permanent tablespace only 
    • D、The Oracle database will perform block checking for the data blocks in all user tablespaces 
    • E、The Oracle database will perform block checking for the data blocks in the SYSTEM tablespace only Oracle

    正确答案:E

  • 第5题：

    Which statement is true about a whole consistent database backup on a database running in ARCHIVELOG mode（）

    • A、The backup will consist of used data blocks only.
    • B、The database must be shut down to accomplish the backup.
    • C、The backup can be accomplished without shutting down the database.
    • D、The backup will contain all database files that have never been backed up.

    正确答案:B

  • 第6题：

    You are connecting to an Oracle database server from a client by using the following connect string：   SQL> CONNECT hr/hr@pdserver.us.oracle.com：1521/proddb   Which naming method is being used in this case？（）

    • A、Local Naming
    • B、Easy Connect
    • C、External Naming
    • D、Directory Naming

    正确答案:B

  • 第7题：

    You are implementing a very simple TCP/IP network. It rarely changes and you would like to use Oracle Connection Manager to filter client requests.  Which naming method can you use？（）

    • A、Only host
    • B、Only local
    • C、Either host or local
    • D、Both host and local

    正确答案:A

  • 第8题：

    单选题
    What is true regarding a shared， server-side parameter file for a Real Application Cluster database？ （）
    A

    It can contain parameters with distinct values for each distance.

    B

    It can contain only parameters with identical values for each instance.

    C

    It must contain an IFILE parameter for each instance’s individual parameter file.

    D

    It must be located in the default location for the primary instance’s parameter file.


    正确答案： C
    解析： 暂无解析

  • 第9题：

    多选题
    When a staging server is used as an environment for testing new data in a default WebSphere Commerce installation， which of the following are true about the staging server？（）
    A

    The database has a subset of the tables in the production server database.

    B

    The database has a copy of selected data from the production database

    C

    The database logs changes for later propagation.

    D

    The database is accessed as read-only to prevent data corruption.

    E

    The database includes all user and order data for offline processing.


    正确答案： A,C
    解析： 暂无解析

  • 第10题：

    单选题
    The DB_BLOCK_CHECKING initialization parameter is set to OFF. 数据库块检测初始化参数被设定为关  Which block checking would be performed?（）
    A

    The Oracle database will perform block checking for the index blocks only 

    B

    The Oracle database will not perform block checking for any of the data blocks 

    C

    The Oracle database will perform block checking for the default permanent tablespace only 

    D

    The Oracle database will perform block checking for the data blocks in all user tablespaces 

    E

    The Oracle database will perform block checking for the data blocks in the SYSTEM tablespace only Oracle


    正确答案： D
    解析： 暂无解析

  • 第11题：

    判断题
    递增递减运算符还支持纯字母（a-z和A-Z）字符的递增递减运算。
    A

    对

    B

    错


    正确答案： 对
    解析： 暂无解析

  • 第12题：

    单选题
    Which statement is true about a whole consistent database backup on a database running in ARCHIVELOG mode（）
    A

    The backup will consist of used data blocks only.

    B

    The database must be shut down to accomplish the backup.

    C

    The backup can be accomplished without shutting down the database.

    D

    The backup will contain all database files that have never been backed up.


    正确答案： B
    解析： 暂无解析

  • 第13题：

    Which three statements are true regarding subqueries?（）

    • A、Subqueries can contain GROUP BY and ORDER BY clauses 
    • B、Main query and subquery can get data from different tables 
    • C、Main query and subquery must get data from the same tables 
    • D、Subqueries can contain ORDER BY but not the GROUP BY clause 
    • E、Only one column or expression can be compared between the main query and subquery
    • F、 Multiple columns or expressions can be compared between the main query and subquery

    正确答案:A,B,E

  • 第14题：

    数字卫星接收机修改节目参数时，对节目名称的修改只支持A-Z，a-z，0-9和空格共63个字符。（）


    正确答案:正确

  • 第15题：

    Which four are correct guidelines for naming database tables?（）

    • A、Must begin with either a number or a letter.
    • B、Must be 1-30 characters long.
    • C、Should not be an Oracle Server reserved word.
    • D、Must contain only A-Z, a-z, 0-+, _, *, and #.
    • E、Must contain only A-Z, a-z, 0-9, _, $, and #.
    • F、Must begin with a letter.

    正确答案:B,C,E,F

  • 第16题：

    What is true regarding a shared， server-side parameter file for a Real Application Cluster database？ （）

    • A、It can contain parameters with distinct values for each distance.
    • B、It can contain only parameters with identical values for each instance.
    • C、It must contain an IFILE parameter for each instance’s individual parameter file.
    • D、It must be located in the default location for the primary instance’s parameter file.

    正确答案:A

  • 第17题：

    Examine the commands executed to monitor database operations: $> conn sys oracle/oracle@prod as sysdba SQL > VAR eid NUMBER SQL > EXEC: eid := DBMS_SQL_MONITOR.BEGIN_OPERATION (‘batch_job’ , FORCED_TRACKING => ‘Y’); Which two statements are true?（）

    • A、Database operations will be monitored only when they consume a significant amount of resource.
    • B、Database operations for all sessions will be monitored.
    • C、Database operations will be monitored only if the STATISTICS_LEVEL parameter is set to TYPICAL and CONTROL_MANAGEMENT_PACK_ACCESS is set DIAGNISTIC + tuning.
    • D、Only DML and DDL statements will be monitored for the session.
    • E、All subsequent statements in the session will be treated as one database operation and will be monitored.

    正确答案:C,E

  • 第18题：

    You are designing the physical database layout on your host machine. What is the relationship between tablespaces and datafiles in the Oracle database?（）

    • A、One tablespace has only one datafile
    • B、Many tablespaces can share one datafile
    • C、One tablespace can have many datafiles
    • D、One datafile can contain many tablespaces

    正确答案:C

  • 第19题：

    递增递减运算符还支持纯字母（a-z和A-Z）字符的递增递减运算。


    正确答案:错误

  • 第20题：

    多选题
    下面哪个选项可以表示文件abCD.ef（）。
    A

    a[a-z][A-F]？.*

    B

    *.e？

    C

    *[A-Z].ef

    D

    [a-zA-Z0-9].*


    正确答案： C,B
    解析： 暂无解析

  • 第21题：

    多选题
    Examine the commands executed to monitor database operations: $> conn sys oracle/oracle@prod as sysdba SQL > VAR eid NUMBER SQL > EXEC: eid := DBMS_SQL_MONITOR.BEGIN_OPERATION (‘batch_job’ , FORCED_TRACKING => ‘Y’); Which two statements are true?（）
    A

    Database operations will be monitored only when they consume a significant amount of resource.

    B

    Database operations for all sessions will be monitored.

    C

    Database operations will be monitored only if the STATISTICS_LEVEL parameter is set to TYPICAL and CONTROL_MANAGEMENT_PACK_ACCESS is set DIAGNISTIC + tuning.

    D

    Only DML and DDL statements will be monitored for the session.

    E

    All subsequent statements in the session will be treated as one database operation and will be monitored.


    正确答案： C,D
    解析： 暂无解析

  • 第22题：

    多选题
    Choose the two correct statements regarding Oracle WebLogic Server（）
    A

    a server instance can be associated with multiple machines

    B

    a machine can be associated with multiple server instance

    C

    a server instance can be associated with only a single machine

    D

    a machine can be associated with only one server instance


    正确答案： B,C
    解析： 暂无解析

  • 第23题：

    多选题
    Which two statements are correct about routing tables in JUNOS?（）
    A

    There are separate tables for IPv4 and IPv6 called inet.0 and inet6.0 respectively.

    B

    They only contain the best possible route to each destination.

    C

    All running protocols can populate the routing tables at the same time.

    D

    Routes with the highest preference value are placed as active routes in the routing table.


    正确答案： D,A
    解析： 暂无解析

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