多选题Which two statements are true regarding the USING and ON clauses in table joins?（）ABoth USING and ON clauses can be used for equijoins and nonequijoinsBAmaximum of one pair of columns can be joined between two tables using the ON clauseCThe ON clause c

题目
多选题
Which two statements are true regarding the USING and ON clauses in table joins?（）
A

Both USING and ON clauses can be used for equijoins and nonequijoins

B

Amaximum of one pair of columns can be joined between two tables using the ON clause

C

The ON clause can be used to join tables on columns that have different names but compatible data types

D

The WHERE clause can be used to apply additional conditions in SELECT statements containing the ON or the USING clause

相似考题

1.Which two statements regarding a SQL profile are true?()A. It is built by Automatic Tuning Optimizer.B. It cannot be stored persistently in the data dictionary.C. It can be used by the query optimizer automatically.D. It can be created manually by using the CREATE PROFILE command.

2.You want to analyze a SQL Tuning Set (STS) using SQL Performance Analyzer in a test database. Which two statements are true regarding the activities performed during the test execution of SQLs in a SQL Tuning Set?（）A.Every SQL statement in the STS is considered only once for executionB.The SQL statements in the STS are executed concurrently to produce the execution plan and execution statisticsC.The execution plan and execution statistics are computed for each SQL statement in the STSD.The effects of DDL and DML are considered to produce the execution plan and execution statistics

3.Which two statements regarding symmetric key encryption are true?() (Choose two.)A. The same key is used for encryption and decryption.B. It is commonly used to create digital certificate signatures.C. It uses two keys: one for encryption and a different key for decryption.D. An attacker can decrypt data if the attacker captures the key used for encryption.

4.Which two statements are true regarding the starting of the database instance using the following command?()SQL>STARTUP UPGRADEA. It enables all system triggers.B. It allows only SYSDBA connections.C. It ensures that all job queues remain active during the upgrade process.D. It sets system initialization parameters to specific values that are required to enable database upgrade scripts to be run.

更多“Which two statements are true regarding the USING and ON cla”相关问题

  • 第1题：

    Which two statements are true regarding L2TP? ()(Choose two.)

    A. Tunnels are initiated by the LAC

    B. Tunnels are initiated by the LNS

    C. By default, subscriber authentication occurs on the LNS

    D. By default, subscriber authentication occurs on the LAC


    参考答案：A, C

  • 第2题：

    Which two statements are true regarding the role of the Routing Engine (RE)?（）

    • A、The RE controls and monitors the chassis.
    • B、The RE manages the Packet Forwarding Engine (PFE).
    • C、The RE receives a copy of the forwarding table from the forwarding plane.
    • D、The RE implements class of service (COS).

    正确答案:A,B

  • 第3题：

    Which two statements are true regarding high-availability chassis clustering？（）

    • A、A chassis cluster consists of two devices.
    • B、A chassis cluster consists of two or more devices.
    • C、Devices participating in a chassis cluster can be different models.
    • D、Devices participating in a chassis cluster must be the same models

    正确答案:A,D

  • 第4题：

    Which two statements regarding asymmetric key encryption are true？（）

    • A、The same key is used for encryption and decryption.
    • B、It is commonly used to create digital certificate signatures.
    • C、It uses two keys： one for encryption and a different key for decryption.
    • D、An attacker can decrypt data if the attacker captures the key used for encryption

    正确答案:A,B

  • 第5题：

    Which two statements are TRUE regarding Coherence Indexes ？ （）

    • A、 indexes are maintained by cache entry ownes
    • B、 an application should not suggest an index that another aplication had suggested
    • C、 indexes cannot be sorted
    • D、 each application using Coherence may suggest the same set of indexes when it starts

    正确答案:A,D

  • 第6题：

    Which two statements are true regarding the USING and ON clauses in table joins?（）

    • A、Both USING and ON clauses can be used for equijoins and nonequijoins 
    • B、Amaximum of one pair of columns can be joined between two tables using the ON clause 
    • C、The ON clause can be used to join tables on columns that have different names but compatible data types 
    • D、The WHERE clause can be used to apply additional conditions in SELECT statements containing the ON or the USING clause 

    正确答案:C,D

  • 第7题：

    多选题
    Which two statements are true regarding the USING clause in table joins?（）
    A

    It can be used to join a maximum of three tables

    B

    It can be used to restrict the number of columns used in a NATURAL join

    C

    It can be used to access data from tables through equijoins as well as nonequijoins

    D

    It can be used to join tables that have columns with the same name and compatible data types


    正确答案： B,A
    解析： 暂无解析

  • 第8题：

    多选题
    Which two statements are true regarding rescue configurations?（）
    A

    Once saved, a rescue configuration is loaded using the rollback 0 command.

    B

    The rescue configuration must contain the minimal elements necessary to restore network connectivity.

    C

    A minimal rescue configuration is defined by default.

    D

    A rescue configuration must include a root password.


    正确答案： B,D
    解析： 暂无解析

  • 第9题：

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

    Tunnels are initiated by the LAC

    B

    Tunnels are initiated by the LNS

    C

    By default, subscriber authentication occurs on the LNS

    D

    By default, subscriber authentication occurs on the LAC


    正确答案： C,D
    解析： 暂无解析

  • 第10题：

    多选题
    Which two statements are true regarding single row functions?（）
    A

    They accept only a single argument

    B

    They can be nested only to two levels

    C

    Arguments can only be column values or constants

    D

    They always return a single result row for every row of a queried table

    E

    They can return a data type value different from the one that is referenced


    正确答案： A,B
    解析： 暂无解析

  • 第11题：

    多选题
    Which two statements regarding a SQL profile are true？（）
    A

    It is built by Automatic Tuning Optimizer.

    B

    It cannot be stored persistently in the data dictionary.

    C

    It can be used by the query optimizer automatically.

    D

    It can be created manually by using the CREATE PROFILE command.


    正确答案： B,C
    解析： 暂无解析

  • 第12题：

    多选题
    Which two statements are true regarding high-availability chassis clustering？（）
    A

    A chassis cluster consists of two devices.

    B

    A chassis cluster consists of two or more devices.

    C

    Devices participating in a chassis cluster can be different models.

    D

    Devices participating in a chassis cluster must be the same models


    正确答案： C,B
    解析： 暂无解析

  • 第13题：

    Which two statements are true regarding rescue configurations?()

    A. Once saved, a rescue configuration is loaded using the rollback 0 command.

    B. The rescue configuration must contain the minimal elements necessary to restore network connectivity.

    C. A minimal rescue configuration is defined by default.

    D. A rescue configuration must include a root password.


    参考答案：B, D

  • 第14题：

    Which two statements are true about using the isUserInRole method to implement security in a Java EEapplication？（）

    • A、It can be invoked only from the doGet or doPost methods.
    • B、It can be used independently of the getRemoteUser method.
    • C、Can return "true" even when its argument is NOT defined as a valid role name in the deployment descriptor.
    • D、Using the isUserInRole method overrides any declarative authentication related to the method in which it is invoked.

    正确答案:B,C

  • 第15题：

    Which two statements are true regarding L2TP? （）(Choose two.)

    • A、Tunnels are initiated by the LAC
    • B、Tunnels are initiated by the LNS
    • C、By default, subscriber authentication occurs on the LNS
    • D、By default, subscriber authentication occurs on the LAC

    正确答案:A,C

  • 第16题：

    Which two statements are true regarding an Automatic Storage Management (ASM) instance? （）

    • A、As ASM instance mounts an ASM control file
    • B、An ASM instance uses the ASMB process for rebalancing of disks within a disk group
    • C、Automatic Memory Management is enabled in an ASM instance even when the MEMORY_TARGET parameter is not set explicitly
    • D、An RDBMS instance gets connected to an ASM instance using ASMB as a foreground process when the database instance is started

    正确答案:C,D

  • 第17题：

    Which two statements are true regarding subqueries? （）

    • A、A subquery can retrieve zero or more rows 
    • B、Only two subqueries can be placed atone level 
    • C、A subquery can be used only in SQL query statements 
    • D、A subquery can appear on either side of a comparison operator 
    • E、There is no limit on the number of subquery levels in the WHERE clause of a SELECT statement 

    正确答案:A,D

  • 第18题：

    多选题
    You want to analyze a SQL Tuning Set (STS) using SQL Performance Analyzer in a test database. Which two statements are true regarding the activities performed during the test execution of SQLs in a SQL Tuning Set?（）
    A

    Every SQL statement in the STS is considered only once for execution

    B

    The SQL statements in the STS are executed concurrently to produce the execution plan and execution statistics

    C

    The execution plan and execution statistics are computed for each SQL statement in the STS

    D

    The effects of DDL and DML are considered to produce the execution plan and execution statistics


    正确答案： A,B
    解析： 暂无解析

  • 第19题：

    多选题
    Regarding an IPsec security association （SA）， which two statements are true？（）
    A

    IKE SA is bidirectional.

    B

    IPsec SA is bidirectional.

    C

    IKE SA is established during phase 2 negotiations.

    D

    IPsec SA is established during phase 2 negotiations.


    正确答案： D,C
    解析： 暂无解析

  • 第20题：

    多选题
    Which two statements are TRUE regarding Coherence Indexes ？ （）
    A

    indexes are maintained by cache entry ownes

    B

    an application should not suggest an index that another aplication had suggested

    C

    indexes cannot be sorted

    D

    each application using Coherence may suggest the same set of indexes when it starts


    正确答案： C,A
    解析： 暂无解析

  • 第21题：

    多选题
    Which two statements are true regarding an Automatic Storage Management （ASM） instance？（）
    A

    As ASM instance mounts an ASM control file

    B

    An ASM instance uses the ASMB process for rebalancing of disks within a disk group

    C

    Automatic Memory Management is enabled in an ASM instance even when the MEMORY_TARGET  parameter is not set explicitly

    D

    An RDBMS instance gets connected to an ASM instance using ASMB as a foreground process when the database instance is started


    正确答案： B,A
    解析： 暂无解析

  • 第22题：

    多选题
    Which two statements are true regarding the starting of the database instance using the following command?（） SQL>STARTUP UPGRADE
    A

    It enables all system triggers.

    B

    It allows only SYSDBA connections.

    C

    It ensures that all job queues remain active during the upgrade process.

    D

    It sets system initialization parameters to specific values that are required to enable database upgrade scripts to be run.


    正确答案： B,D
    解析： 暂无解析

  • 第23题：

    多选题
    Which two statements regarding symmetric key encryption are true?（） (Choose two.)
    A

    The same key is used for encryption and decryption.

    B

    It is commonly used to create digital certificate signatures.

    C

    It uses two keys: one for encryption and a different key for decryption.

    D

    An attacker can decrypt data if the attacker captures the key used for encryption.


    正确答案： D,B
    解析： 暂无解析

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