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

题目

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.
相似考题

1.You receive an alarm that your Junos device is experiencing problems regarding temperature. Which two commands would you use to investigate this problem?()A. show chassis hardwareB. show chassis temperature-thresholdsC. show chassis pic fpc-slot <value> pic-slot <value>D. show chassis environment

2.In which three cases would you use the USING clause?（）A、You want to create a nonequijoin.B、The tables to be joined have multiple NULL columns.C、The tables to be joined have columns of the same name and different data types.D、The tables to be joined have columns with the same name and compatible data types.E、You want to use a NATURAL join, but you want to restrict the number of columns in the join condition.

3.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.

4.Which two commands would you use to discard a candidate configuration?()A. rollbackB. deleteC. delete 0D. rollback 0

更多“In which two cases would you use”相关问题

  • 第1题：

    You have two NTP servers 10.1.1.1 & 10.1.1.2 and want to configure a router to use 10.1.1.2 as its NTP server before falling back to 10.1.1.1. Which command will you use？


    正确答案: Ntp server 10.1.1.1
    Ntp server 10.1.1.2 prefer
    （notice the answer with the word “prefer”）

  • 第2题：

    You are designing an n-tier Java EE application. You have already decided that some of your JSPs willneed to get data from a Customer entity bean. You are trying to decide whether to use a Customer stubobject or a Transfer Object. Which two statements are true？（）

    • A、The stub will increase network traffic.
    • B、The Transfer Object will decrease data staleness.
    • C、The stub will increase the logic necessary in the JSPs.
    • D、In both cases， the JSPs can use EL expressions to get data.
    • E、Only the Transfer Object will need to use a Business Delegate.

    正确答案:A,D

  • 第3题：

    Very soon you will be performing maintenance operations. You would have several jobs to run as soon as the maintenance period starts. Which method would you use to create jobs without specifying the time period when the job should be run？（）

    • A、 use DBMS_IJOB package
    • B、 use Oracle Scheduler
    • C、 use DBMS_JOB package
    • D、 use Oracle Data Pump Export and Import

    正确答案:B

  • 第4题：

    Which two built-ins would you use to remove the HOUR_ALARM timer using the timer_id parameter?（）

    • A、FIND_TIMER 
    • B、CREATE_TIMER 
    • C、SET_TIMER 
    • D、DELETE_TIMER 
    • E、GET_APPLICATION_PROPERTY

    正确答案:A,D

  • 第5题：

    Which substitution variable would you use if you want to reuse the variable without prompting the user each time?（）

    • A、&
    • B、ACCEPT
    • C、PROMPT
    • D、&&

    正确答案:D

  • 第6题：

    问答题
    You have two NTP servers 10.1.1.1 & 10.1.1.2 and want to configure a router to use 10.1.1.2 as its NTP server before falling back to 10.1.1.1. Which command will you use？

    正确答案： Ntp server 10.1.1.1
    Ntp server 10.1.1.2 prefer
    （notice the answer with the word “prefer”）
    解析： 暂无解析

  • 第7题：

    单选题
    Which protocols would you want to use for secure VPN ？（）
    A

    EAP

    B

    Chap

    C

    Ms-Chap

    D

    PPTP

    E

    PAP

    F

    SPAP


    正确答案： C
    解析： 暂无解析

  • 第8题：

    多选题
    Which two built-ins would you use to remove the HOUR_ALARM timer using the timer_id parameter?（）
    A

    FIND_TIMER

    B

    CREATE_TIMER

    C

    SET_TIMER

    D

    DELETE_TIMER

    E

    GET_APPLICATION_PROPERTY


    正确答案： A,B
    解析： 暂无解析

  • 第9题：

    单选题
    Which substitution variable would you use if you want to reuse the variable without prompting the user each time?（）
    A

    &

    B

    ACCEPT

    C

    PROMPT

    D

    &&


    正确答案： C
    解析： 暂无解析

  • 第10题：

    多选题
    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.


    正确答案： D,C
    解析： 暂无解析

  • 第11题：

    多选题
    Which two commands would you use to discard a candidate configuration?（）
    A

    rollback

    B

    delete

    C

    delete 0

    D

    rollback 0


    正确答案： C,D
    解析： 暂无解析

  • 第12题：

    多选题
    Which two commands would you use to view OSPF routes?（）
    A

    show ip route ospf

    B

    show ospf routes

    C

    show route protocol ospf

    D

    show route


    正确答案： B,D
    解析： 暂无解析

  • 第13题：

    Which command （without options） would you use to display how much space is available on all mounted partitions？（）


    正确答案:/BIN/DF

  • 第14题：

    You noticed that the index tablespace in your database requires a recovery. However， instead of performing a media recovery， you decided to re/x7fcreate the indexes in a new tablespace. Which two options would you use to reduce the time it takes to re/x7fcreate the indexes？（）

    • A、ONLINE
    • B、REVERSE
    • C、PARALLEL
    • D、COMPRESS
    • E、NOLOGGING
    • F、COMPUTE STATISTICS

    正确答案:C,E

  • 第15题：

    You work as a database administrator for Certkiller .com. You have set the retention period for Automatic Repository （AWR） statistics to four days and collection interval to 15 minutes. You want to view the statistics collected and stored in AWR snapshot. Which two methods would you use to view the AWR statistics？（）

    • A、use enterprise manager
    • B、use DBMS_SQL package
    • C、use DBMS_AWR package
    • D、use PRVT_WORKLOAD package
    • E、query the AWR snapshot repository objects
    • F、use DBMS_WORKLOAD_REPOSITORY package

    正确答案:A,F

  • 第16题：

    You noticed that the index tablespace in your database requires a recovery. However， instead of performing a media recovery， you decided to re-create the indexes in a new tablespace. Which two options would you use to reduce the time it takes to re-create the indexes？（）

    • A、 ONLINE
    • B、 REVERSE
    • C、 PARALLEL
    • D、 COMPRESS
    • E、 NOLOGGING
    • F、 COMPUTE STATISTICS

    正确答案:C,E

  • 第17题：

    Which protocols would you want to use for secure VPN ？（）

    • A、EAP
    • B、Chap
    • C、Ms-Chap
    • D、PPTP
    • E、PAP
    • F、SPAP

    正确答案:D

  • 第18题：

    多选题
    You noticed that the index tablespace in your database requires a recovery. However， instead of performing a media recovery， you decided to re-create the indexes in a new tablespace. Which two options would you use to reduce the time it takes to re-create the indexes？（）
    A

    ONLINE

    B

    REVERSE

    C

    PARALLEL

    D

    COMPRESS

    E

    NOLOGGING

    F

    COMPUTE STATISTICS


    正确答案： E,B
    解析： 暂无解析

  • 第19题：

    单选题
    Very soon you will be performing maintenance operations. You would have several jobs to run as soon as the maintenance period starts. Which method would you use to create jobs without specifying the time period when the job should be run？（）
    A

     use DBMS_IJOB package

    B

     use Oracle Scheduler

    C

     use DBMS_JOB package

    D

     use Oracle Data Pump Export and Import


    正确答案： A
    解析： 暂无解析

  • 第20题：

    多选题
    In which three cases would you use the USING clause?（）
    A

    You want to create a nonequijoin.

    B

    The tables to be joined have multiple NULL columns.

    C

    The tables to be joined have columns of the same name and different data types.

    D

    The tables to be joined have columns with the same name and compatible data types.

    E

    You want to use a NATURAL join, but you want to restrict the number of columns in the join condition.


    正确答案： C,D
    解析： 暂无解析

  • 第21题：

    多选题
    You receive an alarm that your Junos device is experiencing problems regarding temperature. Which two commands would you use to investigate this problem?（）
    A

    show chassis hardware

    B

    show chassis temperature-thresholds

    C

    show chassis pic fpc-slot <value> pic-slot <value>

    D

    show chassis environment


    正确答案： A,C
    解析： 暂无解析

  • 第22题：

    多选题
    Without calling JTAC, which two troubleshooting tools on a MAG Series device would you use to identify the cause of an authentication failure?（）
    A

    Remote Debugging

    B

    System Snapshot

    C

    User Access logs

    D

    Policy Tracing


    正确答案： B,D
    解析： 暂无解析

  • 第23题：

    单选题
    On a Cisco Catalyst 4500 Series, the fail LED is lit for one if its two power supplies. Which command would you use to check on this problem ?（）
    A

    Show module

    B

    Show errdisable detect

    C

    Show environment

    D

    Show diagnostic content


    正确答案： A
    解析： 暂无解析

  • 第24题：

    多选题
    You noticed that the index tablespace in your database requires a recovery. However， instead of performing a media recovery， you decided to re/x7fcreate the indexes in a new tablespace. Which two options would you use to reduce the time it takes to re/x7fcreate the indexes？（）
    A

    ONLINE

    B

    REVERSE

    C

    PARALLEL

    D

    COMPRESS

    E

    NOLOGGING

    F

    COMPUTE STATISTICS


    正确答案： D,A
    解析： 暂无解析

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