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单选题Evaluate the following SQL statements that are issued in the given order:  What would be the status of the foreign key EMP_MGR_FK?()AIt would be automatically enabled and deferred.BIt would be automatically enabled and immediate.CIt would remain disabl

题目
单选题
Evaluate the following SQL statements that are issued in the given order:  What would be the status of the foreign key EMP_MGR_FK?()
A

 It would be automatically enabled and deferred.

B

 It would be automatically enabled and immediate.

C

 It would remain disabled and has to be enabled manually using the ALTER TABLE command.

D

 It would remain disabled and can be enabled only by dropping the foreign key constraint and re-creating it.


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更多“单选题Evaluate the following SQL statements that are issued in the given order:  What would be the status of the foreign key EMP_MGR_FK?()A  It would be automatically enabled and deferred.B  It would be automatically enabled and immediate.C  It would rema”相关问题
  • 第1题:

    Examine the SQL statement that creates ORDERS table: CREATE TABLE orders (SER_NO NUMBER UNIQUE, ORDER_ID NUMBER, ORDER_DATE DATE NOT NULL, STATUS VARCHAR2(10) CHECK (status IN ('CREDIT', 'CASH')), PROD_ID NUMBER REFERENCES PRODUCTS(PRODUCT_ID), ORD_TOTAL NUMBER, PRIMARY KEY (order_id, order_date)); For which columns would an index be automatically created when you execute the above SQL statement? ()

    • A、SER_NO
    • B、ORDER_ID
    • C、STATUS
    • D、PROD_ID
    • E、ORD_TOTAL
    • F、composite index on ORDER_ID and ORDER_DATE

    正确答案:A,F

  • 第2题:

    You work as a database administrator for Supportcenter.cn. Your database is functional. One of the disks containing a mirrored redo log member has bad sectors in it. You are unable to fix the damaged file. How does the loss of a redo log member affect the instance of the database that is currently running?()

    • A、The instance would normally abort.
    • B、The instance would not be affected.
    • C、The instance would be invalid, so would have to be aborted.
    • D、The instance would remain open, but the LGWR process would fail.
    • E、The instance would remain open and would automatically create the missing file

    正确答案:B

  • 第3题:

    You have to shut down the database instance with the ABORT option because of a hardware failure. Which statement is true about the subsequent opening of the database?()

    • A、The database would open normally.
    • B、The database would not open, and it would stop at mount stage.
    • C、The database would open after automatically performing instance recovery.
    • D、The database would not open, and you have to perform database recovery to open it.

    正确答案:C

  • 第4题:

    Which type of PL/SQL construct would you use to automatically correct the error resulting from a statement that was suspended due to a space-related problem?()

    • A、 functions
    • B、 package
    • C、 procedure
    • D、 database trigger
    • E、 anonymous PL/SQL block

    正确答案:D

  • 第5题:

    单选题
    You work as a database administrator for Certkiller .com. Your database is functional. One of the disks containing a mirrored redo log member has bad sectors in it. You are unable to fix the damaged file.  How does the loss of a redo log member affect the instance of the database that is currently running?()
    A

    The instance would normally abort.

    B

    The instance would not be affected.

    C

    The instance would be invalid, so would have to be aborted.

    D

    The instance would remain open, but the LGWR process would fail.

    E

    The instance would remain open and would automatically create the missing file


    正确答案: E
    解析: 暂无解析

  • 第6题:

    单选题
    Which of the following statements is true according to the text?
    A

    Washington would not appreciate the idea of overthrowing social order.

    B

    Racial separation is an outcome of accommodationist ideology.

    C

    Washington would not support determined activist leadership.

    D

    The Philadelphia Negro is a book on blacks in American South.


    正确答案: A
    解析:
    推理判断题。由最后一段第二句“The major difference…Washington sought change that was evolutionary in nature and did not upset the social order…”可知,华盛顿追求本质上逐步发展的变化,不会扰乱社会秩序,即他不赞同推翻社会秩序,故选A;根据最后一段第一句“As a leader in education,…not only the tradition of racial segregation in the schools but also the accommodationist ideology of Booker T. Washington.”可知,杜·渡依斯对华盛顿的调和主义思想提出了挑战,故选项B错误;选项C在文中没有提及;The Philadelphia Negro是研究费城黑人的书,故D选项错误,所以答案为A项。

  • 第7题:

    单选题
    View the Exhibit and examine the structure of the ORDERS and ORDERJTEMS tables.  Evaluate the following SQL statement:   SELECT oi.order_id, product_jd, order_date   FROM order_items oi JOIN orders o   USING (order_id);   Which statement is true regarding the execution of this SQL statement?()
    A

     The statement would not execute because table aliases are not allowed in the JOIN clause.

    B

     The statement would not execute because the table alias prefix is not used in the USING clause.

    C

     The statement would not execute because all the columns in the SELECT clause are not prefixed with table aliases.

    D

     The statement would not execute because the column part of the USING clause cannot have a qualifier in the SELECT list.


    正确答案: A
    解析: 暂无解析

  • 第8题:

    多选题
    Examine the SQL statement that creates ORDERS table: CREATE TABLE orders (SER_NO NUMBER UNIQUE, ORDER_ID NUMBER, ORDER_DATE DATE NOT NULL, STATUS VARCHAR2(10) CHECK (status IN ('CREDIT', 'CASH')), PROD_ID NUMBER REFERENCES PRODUCTS(PRODUCT_ID), ORD_TOTAL NUMBER, PRIMARY KEY (order_id, order_date)); For which columns would an index be automatically created when you execute the above SQL statement? ()
    A

    SER_NO

    B

    ORDER_ID

    C

    STATUS

    D

    PROD_ID

    E

    ORD_TOTAL

    F

    composite index on ORDER_ID and ORDER_DATE


    正确答案: A,F
    解析: 暂无解析

  • 第9题:

    单选题
    Which type of PL/SQL construct would you use to automatically correct the error resulting from a statement that was suspended due to a space/x7frelated problem? ()
    A

    function

    B

    package

    C

    procedure

    D

    database trigger

    E

    anonymous PL/SQL block


    正确答案: A
    解析: 暂无解析

  • 第10题:

    单选题
    You defined the Recovery Manager (RMAN) retention policy to recovery window of 7 days by executing the following command:  RMAN> CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS;  When a backup is performed, what would be the status of this backup after seven days?()
    A

     The backup would be marked as invalid.

    B

     The backup would be marked as obsolete.

    C

     The backup would be removed from the media.

    D

     The backup would be removed from the RMAN repository.


    正确答案: D
    解析: 暂无解析

  • 第11题:

    单选题
    A customer would like to share the processor resources automatically between logical partitions.  Which of the following would accomplish this requirement without user interaction? ()
    A

     Dynamic LPARs

    B

     On/Off Capacity on Demand

    C

     Uncapped Micro-Partitioning

    D

     Enterprise Workload Manager


    正确答案: C
    解析: 暂无解析

  • 第12题:

    多选题
    Examine the SQL statements that creates ORDERS table: For which columns would an index be automatically created when you execute the above SQL statement? ()
    A

    SER_NO

    B

    ORDER_ID

    C

    STATUS

    D

    PROD_ID

    E

    ORD_TOTAL

    F

    Composite index on ORDER_ID and ORDER_DATE


    正确答案: C,F
    解析: 暂无解析

  • 第13题:

    Which type of PL/SQL construct would you use to automatically correct the error resulting from a statement that was suspended due to a space/x7frelated problem? ()

    • A、function
    • B、package
    • C、procedure
    • D、database trigger
    • E、anonymous PL/SQL block

    正确答案:D

  • 第14题:

    You defined the Recovery Manager (RMAN) retention policy to recovery window of 7 days by executing the following command:  RMAN> CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS;  When a backup is performed, what would be the status of this backup after seven days?()

    • A、 The backup would be marked as invalid.
    • B、 The backup would be marked as obsolete.
    • C、 The backup would be removed from the media.
    • D、 The backup would be removed from the RMAN repository.

    正确答案:B

  • 第15题:

    Examine the SQL statements that creates ORDERS table: CREATE TABLE orders (SER_NO NUMBER UNIQUE, ORDER_ID NUMBER, ORDER_DATE DATE NOT NULL STATUS VARCHARD2(10) CHECK (status IN ('CREDIT','CASH')), PROD_ID_NUMBER REFERENCES PRODUCTS(PRODUCT_ID), ORD_TOTAL NUMBER, PRIMARY KEY (order id, order date)); For which columns would an index be automatically created when you execute the aboveSQL statement? ()

    • A、SER_NO
    • B、ORDER_ID
    • C、STATUS
    • D、PROD_ID
    • E、ORD_TOTAL
    • F、Composite index on ORDER_ID and ORDER_DATE

    正确答案:A,F

  • 第16题:

    Evaluate the following query: SQL> SELECT TRUNC(ROUND(156.00,-1),-1)FROM DUAL; What would be the outcome?()

    • A、16 
    • B、100 
    • C、160 
    • D、200 
    • E、150

    正确答案:C

  • 第17题:

    单选题
    Evaluate the following SQL statements that are issued in the given order: What would be the status of the foreign key EMP_MGR_FK?()
    A

     It would be automatically enabled and deferred.

    B

     It would be automatically enabled and immediate.

    C

     It would remain disabled and has to be enabled manually using the ALTER TABLE command.

    D

     It would remain disabled and can be enabled only by dropping the foreign key constraint and re-creating it.


    正确答案: B
    解析: 暂无解析

  • 第18题:

    单选题
    Evaluate the CREATE TABLE statement:   CREATE TABLE products   (product_id NUMBER (6)  CONSTRAINT prod_id_pk PRIMARY KEY,  product_name VARCHAR2 (15));   Which statement is true regarding the PROD_ID_PK constraint?()
    A

     It would be created only if a unique index is manually created first.

    B

     It would be created and would use an automatically created unique index.

    C

     It would be created and would use an automatically created nonunique index.

    D

     It would be created and remains in a disabled state because no index is specified in the command.


    正确答案: A
    解析: 暂无解析

  • 第19题:

    单选题
    Which of the following options would best help to reduce packet fragmentation for a TCP application transferring large amounts of data between servers across a path of multiple networks?()
    A

     Adjust Path MTU attributes, using the no command.

    B

     Adjust the status queue size on the adapters, using the chdev command.

    C

     Adjust ipforwarding to enabled, using the no command.

    D

     Adjust tcp_maxburst to enabled, using the no command.


    正确答案: D
    解析: 暂无解析

  • 第20题:

    单选题
    You have to shut down the database instance with the ABORT option because of a hardware failure. Which statement is true about the subsequent opening of the database?()
    A

    The database would open normally.

    B

    The database would not open, and it would stop at mount stage.

    C

    The database would open after automatically performing instance recovery.

    D

    The database would not open, and you have to perform database recovery to open it.


    正确答案: D
    解析: 暂无解析

  • 第21题:

    多选题
    Examine the SQL statements that creates ORDERS table: CREATE TABLE orders (SER_NO NUMBER UNIQUE, ORDER_ID NUMBER, ORDER_DATE DATE NOT NULL STATUS VARCHARD2(10) CHECK (status IN ('CREDIT','CASH')), PROD_ID_NUMBER REFERENCES PRODUCTS(PRODUCT_ID), ORD_TOTAL NUMBER, PRIMARY KEY (order id, order date)); For which columns would an index be automatically created when you execute the aboveSQL statement? ()
    A

    SER_NO

    B

    ORDER_ID

    C

    STATUS

    D

    PROD_ID

    E

    ORD_TOTAL

    F

    Composite index on ORDER_ID and ORDER_DATE


    正确答案: C,F
    解析: 暂无解析

  • 第22题:

    单选题
    Which type of PL/SQL construct would you use to automatically correct the error resulting from a statement that was suspended due to a space-related problem?()
    A

     functions

    B

     package

    C

     procedure

    D

     database trigger

    E

     anonymous PL/SQL block


    正确答案: B
    解析: 暂无解析

  • 第23题:

    多选题
    Examine the SQL statement that creates ORDERS table: CREATE TABLE orders (SER_NO NUMBER UNIQUE, ORDER_ID NUMBER, ORDER_DATE DATE NOT NULL, STATUS VARCHAR2(10) CHECK (status IN ('CREDIT', 'CASH')), PROD_ID NUMBER REFERENCES PRODUCTS(PRODUCT_ID), ORD_TOTAL NUMBER, PRIMARY KEY (order_id, order_date)); For which columns would an index be automatically created when you execute the above SQL statement? ()
    A

    SER_NO

    B

    ORDER_ID

    C

    STATUS

    D

    PROD_ID

    E

    ORD_TOTAL

    F

    composite index on ORDER_ID and ORDER_DATE


    正确答案: F,C
    解析: 暂无解析

  • 第24题:

    单选题
    Evaluate the following query: SQL> SELECT TRUNC(ROUND(156.00,-1),-1)FROM DUAL; What would be the outcome?()
    A

    16 

    B

    100 

    C

    160 

    D

    200 

    E

    150


    正确答案: C
    解析: 暂无解析