Which two statements about subqueries are true?（）A、A single row subquery can retrieve data from only one table.B、A SQL query statement cannot display data from table B that is referred to in its subquery, unless table B is included in the main query's FRO

题目

Which two statements about subqueries are true?（）

  • A、A single row subquery can retrieve data from only one table.
  • B、A SQL query statement cannot display data from table B that is referred to in its subquery, unless table B is included in the main query's FROM clause.
  • C、A SQL query statement can display data from table B that is referred to in its subquery, without including table B in its own FROM clause.
  • D、A single row subquery can retrieve data from more than one table.
  • E、A single row subquery cannot be used in a condition where the LIKE operator is used for comparison.
  • F、A multiple-row subquery cannot be used in a condition where the LIKE operator is used for comparison.
相似考题

1.Which of the following statements about ORACLE is (are) correct?Ⅰ.ORACLE follows SQL standardⅡ.ORACLE database defines two logical types: table and viewA．ⅠonlyB．Ⅱ onlyC．Ⅰ and ⅡD．none of the above

2.Which two statements are true about AH?() (Choose two.)A. AH provides data integrity.B. AH is identified by IP protocol 50.C. AH is identified by IP protocol 51.D. AH cannot work in conjunction with ESP

3.Which two statements are true about precedence values in policy?() (Choose two.)A. 1 is the default precedence.B. A lower number is preferred.C. A higher number is preferred.D. 100 is the default precedence.

4.Which two statements are true about pool－based source NAT? ()(Choose two.)A. PAT is not supported.B. PAT is enabled by default.C. It supports the address-persistent configuration option.D. It supports the junos-global configuration option.

更多“Which two statements about subqu”相关问题

  • 第1题：

    Which two statements about VACLs on Cisco Nexus 7000 Series Switches are true？ （）

    • A、 A single VACL can be shared across two or more VDCs.
    • B、 Use of VACLs requires no special license to be installed.
    • C、 VACLs make use of IP or MAC ACLs.
    • D、 Only options drop and forward are permitted.

    正确答案:B,C

  • 第2题：

    Which two statements are true about traffic shaping？（）

    • A、Out-of-profile packets are queued.
    • B、It causes TCP retransmits.
    • C、Marking/remarking is not supported.
    • D、It does not respond to BECN and ForeSight Messages.
    • E、It uses a single/two-bucket mechanism for metering.

    正确答案:A,C

  • 第3题：

    Which two statements about OSPF IPv6 routing are true？（）

    • A、It requires OSPF version 3.
    • B、automatically detects neighbors over NHMA interfaces
    • C、It supports encryption using
    • D、It uses LSA type 9
    • E、It uses LSA type 8

    正确答案:A,E

  • 第4题：

    Which two statements are true about pool-based source NAT? （）(Choose two.)

    • A、PAT is not supported.
    • B、PAT is enabled by default.
    • C、It supports the address-persistent configuration option.
    • D、It supports the junos-global configuration option.

    正确答案:B,C

  • 第5题：

    Which two statements are true about standard database auditing（）

    • A、DDL statements can be audited.
    • B、Statements that refer to stand-alone procedure can be audited.
    • C、Operations by the users logged on as SYSDBA cannot be audited.
    • D、Only one audit record is ever created for a session per audited statement even though it is executedmore than once.

    正确答案:A,B

  • 第6题：

    Which two statements about creating constraints are true?（）

    • A、Constraint names must start with SYS_C
    • B、All constraints must be defines at the column level
    • C、Constraints can be created after the table is created
    • D、Constraints can be created at the same time the table is created
    • E、Information about constraints is found in the VIEW_CONSTRAINTS dictionary view

    正确答案:C,D

  • 第7题：

    多选题
    By default, which two statements are true about export routing polices?（）
    A

    Export polices can evaluate only active routes

    B

    Export polices can evaluate all routes

    C

    Export polices can be applied to the forwarding table

    D

    Export polices can be applied to interfaces


    正确答案： B,A
    解析： 暂无解析

  • 第8题：

    多选题
    Which two statements about creating constraints are true?（）
    A

    Constraint names must start with SYS_C

    B

    All constraints must be defines at the column level

    C

    Constraints can be created after the table is created

    D

    Constraints can be created at the same time the table is created

    E

    Information about constraints is found in the VIEW_CONSTRAINTS dictionary view


    正确答案： E,D
    解析： 暂无解析

  • 第9题：

    多选题
    Which two statements are true about traffic shaping？（）
    A

    Out-of-profile packets are queued.

    B

    It causes TCP retransmits.

    C

    Marking/remarking is not supported.

    D

    It does not respond to BECN and ForeSight Messages.

    E

    It uses a single/two-bucket mechanism for metering.


    正确答案： E,B
    解析： 暂无解析

  • 第10题：

    Which two statements are true about L2TP tunnels?（） (Choose two.)

    • A、Traffic is clear text
    • B、Traffic is encrypted 
    • C、They are initiated by the LNS
    • D、They are initiated by the LAC

    正确答案:A,D

  • 第11题：

    Which two statements about static NAT translations are true?（）

    • A、They are always present in the NAT table.
    • B、They allow connection to be initiated from the outside.
    • C、They can be configured with access lists, to allow two or more connections to be initiated from the outside.
    • D、They require no inside or outside interface markings because addresses are statically defined.

    正确答案:A,B

  • 第12题：

    Which two statements about VPLS are true？ （）

    • A、There is a full mesh of pseudowires.
    • B、There is a partial mesh of pseudowires.
    • C、Only L2TPv3 can be used for pseudowire establishment.
    • D、There is split-horizon to avoid loops.

    正确答案:A,D

  • 第13题：

    Which two statements are true about precedence values in policy?（） (Choose two.)

    • A、1 is the default precedence.
    • B、A lower number is preferred.
    • C、A higher number is preferred.
    • D、100 is the default precedence.

    正确答案:B,D

  • 第14题：

    Which two statements are true about record groups?（）

    • A、They are stored in the database. 
    • B、They are stored in local Forms memory. 
    • C、The type is specified explicitly at design time. 
    • D、The type is implied by when and how it is created.

    正确答案:B,D

  • 第15题：

    多选题
    Which two statements are true about L2TP tunnels?（） (Choose two.)
    A

    Traffic is clear text

    B

    Traffic is encrypted 

    C

    They are initiated by the LNS

    D

    They are initiated by the LAC


    正确答案： B,D
    解析： 暂无解析

  • 第16题：

    多选题
    Which two statements are true about AH?（） (Choose two.)
    A

    AH provides data integrity.

    B

    AH is identified by IP protocol 50.

    C

    AH is identified by IP protocol 51.

    D

    AH cannot work in conjunction with ESP


    正确答案： D,C
    解析： 暂无解析

  • 第17题：

    多选题
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    A

    The bus is limited to 32 devices

    B

    It is a full duplex serial standard

    C

    It is a half-duplex serial standard

    D

    It allows up to 320 MB/s of shared channel bandwidth


    正确答案： B,C
    解析： 暂无解析

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