单选题Which pseudocolumn could you use to identify a unique row in a Flashback Versions Query？（）AXIDBVERSIONS_PKCVERSIONS_XIDDVERSIONS_UNIQUE

题目
单选题
Which pseudocolumn could you use to identify a unique row in a Flashback Versions Query？（）
A

 XID

B

 VERSIONS_PK

C

 VERSIONS_XID

D

 VERSIONS_UNIQUE

相似考题

1.WhichpseudocolumncouldyouusetoidentifyauniquerowinaFlashbackVersionsQuery?()A.XIDB.VERSIONS_PKC.VERSIONS_XIDD.VERSIONS_UNIQUE

2.You are employed as a DBA in an organization. You are informed that the record of EMP_NO 1000 is missing from the SCOTT.EMP table. You are required to identify the user who deleted the record， the SQL statement that will undo the deletion， and the transaction ID of the transaction that deleted the employee record. Which feature will you use to perform the tasks？（）A、 Only the Flashback TableB、 Both the Flashback Transaction Query and the Flashback Version QueryC、 Only the Flashback DropD、 Only the Flashback Version

3.You want to use the Flashback Transaction Query feature to identify all the changes made to your database within a specific time period. What is a prerequisite for using the Flashback Transaction Query feature？（）A、 You must use automatic undo management in the database.B、 You must configure OMF in your database.C、 You must configure ASM for storing the datafiles.D、 You must multiplex the online redo log file.

4.Which of the following statements best describes Flashback Versions Query？（）  A、 Flashback Versions Query is used to make changes to multiple versions of data that existed between two points in time.B、 Flashback Versions Query is used to view all version changes on rows that existed between the time  the query was executed and a point in time in the past.C、 Flashback Versions Query is used to view version changes and the SQL to undo those changes on rows that existed between two points in time.D、 Flashback Versions Query is used to view all version changes on rows that existed between two points in time.

更多“单选题Which pseudocolumn could you use to identify a unique row in a Flashback Versions Query？（）A  XIDB  VERSIONS_PKC  VERSIONS_XIDD  VERSIONS_UNIQUE”相关问题

  • 第1题：

    By using the transaction identifier provided by（）for a particular row change， you can use the Flashback Transaction Query to see the operation performed by the transaction. 

    • A、 Flashback Table
    • B、 Flashback Database
    • C、 Flashback Version Query
    • D、 The RMAN REPORT command
    • E、 The DBA_PENDING_TRANSACTIONS view

    正确答案:C

  • 第2题：

    You are maintaining your OLTP database in Oracle10g. You are performing the Flashback Transaction Query to find the undo SQL statements that can be used to undo the changes made to the database in the specific time period. Which pseudocolumn will you use to perform the Flashback Transaction Query？（）

    • A、 VERSIONS_STARTSCN
    • B、 VERSIONS_STARTTIME
    • C、 VERSIONS_XID
    • D、 VERSIONS_OPERATION

    正确答案:C

  • 第3题：

    In which scenario will you use the Flashback Transaction Query feature？（）

    • A、 when you want to restore an important table that is dropped from the Recycle Bin
    • B、 when you want to obtain the SQL statements to undo the deletion of some important records from a table by a transaction
    • C、when you want to restore a dropped user’s schema
    • D、 when a row of a table is updated many times within a specific time period and you want all the versions of the row in the specified time period

    正确答案:B

  • 第4题：

    By using the transaction identifier provided by （） for a particular row change， you can use theFlashback Transaction Query to see the operation performed by the transaction. 

    • A、Flashback Table
    • B、Flashback Database
    • C、Flashback Versions Query
    • D、the RMAN REPORT command
    • E、the DBA_PENDING_TRANSACTIONS view

    正确答案:C

  • 第5题：

    By mistake， you ran the batch job （for updating the BILL_DETAILS table） twice. You are not sure which rows in the BILL_DETAILS table were affected. You need to identify：  a） A list of changes made along with the transaction identifier of each change.  b） The necessary SQL statements to undo the erroneous changes.  Which option would you choose？（）

    • A、 RMAN only.
    • B、 Flashback Table only.
    • C、 Flashback Version Query only.
    • D、 Flashback Database and Flashback Transaction Query.
    • E、 Flashback Version Query and Flashback Transaction Query.

    正确答案:E

  • 第6题：

    单选题
    In which scenario will you use the Flashback Transaction Query feature？（）
    A

     when you want to restore an important table that is dropped from the Recycle Bin

    B

     when you want to obtain the SQL statements to undo the deletion of some important records from a table by a transaction

    C

    when you want to restore a dropped user’s schema

    D

     when a row of a table is updated many times within a specific time period and you want all the versions of the row in the specified time period


    正确答案： D
    解析： 暂无解析

  • 第7题：

    单选题
    By using the transaction identifier provided by（）for a particular row change， you can use the Flashback Transaction Query to see the operation performed by the transaction.
    A

     Flashback Table

    B

     Flashback Database

    C

     Flashback Version Query

    D

     The RMAN REPORT command

    E

     The DBA_PENDING_TRANSACTIONS view


    正确答案： A
    解析： 暂无解析

  • 第8题：

    单选题
    Which of the following statements best describes Flashback Versions Query？（）
    A

     Flashback Versions Query is used to make changes to multiple versions of data that existed between two points in time.

    B

     Flashback Versions Query is used to view all version changes on rows that existed between the time  the query was executed and a point in time in the past.

    C

     Flashback Versions Query is used to view version changes and the SQL to undo those changes on rows that existed between two points in time.

    D

     Flashback Versions Query is used to view all version changes on rows that existed between two  points in time.


    正确答案： B
    解析： 暂无解析

  • 第9题：

    单选题
    You want to use the Flashback Transaction Query feature to identify all the changes made to your database within a specific time period. What is a prerequisite for using the Flashback Transaction Query feature？（）
    A

     You must use automatic undo management in the database.

    B

     You must configure OMF in your database.

    C

     You must configure ASM for storing the datafiles.

    D

     You must multiplex the online redo log file.


    正确答案： C
    解析： 暂无解析

  • 第10题：

    单选题
    By mistake， you ran the batch job （for updating the BILL_DETAILS table） twice. You are not sure which rows in the BILL_DETAILS table were affected. You need to identify：  a） a list of changes made along with the transaction identifier of each change  b） the necessary SQL statements to undo the erroneous changes  Which option would you choose？（）
    A

    RMAN only

    B

    Flashback Table only

    C

    Flashback Versions Query only

    D

    Flashback Database and Flashback Transaction Query

    E

    Flashback Versions Query and Flashback Transaction Query


    正确答案： C
    解析： 暂无解析

  • 第11题：

    多选题
    Which two statements are correct regarding the Flashback Versions Query feature？（）
    A

    You can use this feature to identify the committed versions of the rows， but not the uncommitted versions.

    B

    You can use this feature to identify the versions of V$ views.

    C

    You can use this feature to identify the inserts， deletes， and updates performed on a particular row but not the data definition language （DDL） operations performed on the table.

    D

    You can use this feature for a table only if row movement is enabled for the table.

    E

    You can use this feature to identify the versions of external and fixed tables.


    正确答案： A,C
    解析： 暂无解析

  • 第12题：

    单选题
    By using the transaction identifier provided by （） for a particular row change， you can use the Flashback Transaction Query to see the operation performed by the transaction.
    A

    Flashback Table

    B

    Flashback Database

    C

    Flashback Versions Query

    D

    the RMAN REPORT command

    E

    the DBA_PENDING_TRANSACTIONS view


    正确答案： A
    解析： 暂无解析

  • 第13题：

    By mistake， you ran the batch job （for updating the BILL_DETAILS table） twice. You are not sure which rows in the BILL_DETAILS table were affected. You need to identify：  a） a list of changes made along with the transaction identifier of each change  b） the necessary SQL statements to undo the erroneous changes  Which option would you choose？（）

    • A、RMAN only
    • B、Flashback Table only
    • C、Flashback Versions Query only
    • D、Flashback Database and Flashback Transaction Query
    • E、Flashback Versions Query and Flashback Transaction Query

    正确答案:E

  • 第14题：

    In which scenario do you use the Flashback Database feature？（）

    • A、 when a table is dropped and you restore it from the Recycle Bin
    • B、 when a user’s schema is dropped and you recover the user’s schema
    • C、 when some incorrect data is inserted in the table and you retrieve the table to a state that was at a certain timestamp
    • D、 when a row of a table is updated frequently and committed， and you view all the versions of the row within a specific duration

    正确答案:B

  • 第15题：

    Which two statements are correct regarding the Flashback Versions Query feature？（）

    • A、 You can use this feature to identify the committed versions of the rows， but not the uncommitted versions.
    • B、 You can use this feature to identify the versions of V$ views.
    • C、 You can use this feature to identify the inserts， deletes， and updates performed on a particular row but not the data definition language （DDL） operations performed on the table.
    • D、 You can use this feature for a table only if row movement is enabled for the table.
    • E、 You can use this feature to identify the versions of external and fixed tables.

    正确答案:A,C

  • 第16题：

    By using the transaction identifier provided by （） for a particular row change， you can use the Flashback Transaction Query to see the operation performed by the transaction. 

    • A、Flashback Table
    • B、Flashback Database
    • C、Flashback Versions Query
    • D、the RMAN REPORT command
    • E、the DBA_PENDING_TRANSACTIONS view

    正确答案:C

  • 第17题：

    Which pseudocolumn could you use to identify a unique row in a Flashback Versions Query？（）

    • A、 XID
    • B、 VERSIONS_PK
    • C、 VERSIONS_XID
    • D、 VERSIONS_UNIQUE

    正确答案:C

  • 第18题：

    单选题
    In which scenario do you use the Flashback Database feature？（）
    A

     when a table is dropped and you restore it from the Recycle Bin

    B

     when a user’s schema is dropped and you recover the user’s schema

    C

     when some incorrect data is inserted in the table and you retrieve the table to a state that was at a certain timestamp

    D

     when a row of a table is updated frequently and committed， and you view all the versions of the row within a specific duration


    正确答案： B
    解析： 暂无解析

  • 第19题：

    单选题
    You are maintaining your OLTP database in Oracle10g. You are performing the Flashback Transaction Query to find the undo SQL statements that can be used to undo the changes made to the database in the specific time period. Which pseudocolumn will you use to perform the Flashback Transaction Query？（）
    A

     VERSIONS_STARTSCN

    B

     VERSIONS_STARTTIME

    C

     VERSIONS_XID

    D

     VERSIONS_OPERATION


    正确答案： A
    解析： 暂无解析

  • 第20题：

    单选题
    You are employed as a DBA in an organization. You are informed that the record of EMP_NO 1000 is missing from the SCOTT.EMP table. You are required to identify the user who deleted the record， the SQL statement that will undo the deletion， and the transaction ID of the transaction that deleted the employee record. Which feature will you use to perform the tasks？（）
    A

     Only the Flashback Table

    B

     Both the Flashback Transaction Query and the Flashback Version Query

    C

     Only the Flashback Drop

    D

     Only the Flashback Version


    正确答案： C
    解析： 暂无解析

  • 第21题：

    单选题
    View the Exhibits. You performed operations on the DEPT4 table as shown in the Exhibit. When you perform the FlashbackVersions Query， you find that the first two updates are not listed. What could be the reason？（）
    A

    The row movement is not enabled on the table.

    B

    The first two updates were not explicitly committed.

    C

    The Flashback Versions Query lists only the most recent update.

    D

    The Flashback Versions Query stops producing rows after it encounters a time in the past when the  table structure was changed.


    正确答案： D
    解析： 暂无解析

  • 第22题：

    单选题
    In which scenario will you use the Flashback Version Query feature？（）
    A

     when you want to restore a table that has been dropped from the Recycle Bin

    B

     when you want to identify the transaction ID of the transaction that deleted some important records from a table

    C

     when you want to recover the schema of a dropped user

    D

    when you want to restore a dropped tablespace


    正确答案： C
    解析： 暂无解析

  • 第23题：

    单选题
    By mistake， you ran the batch job （for updating the BILL_DETAILS table） twice. You are not sure which rows in the BILL_DETAILS table were affected. You need to identify：  a） A list of changes made along with the transaction identifier of each change.  b） The necessary SQL statements to undo the erroneous changes.  Which option would you choose？（）
    A

     RMAN only.

    B

     Flashback Table only.

    C

     Flashback Version Query only.

    D

     Flashback Database and Flashback Transaction Query.

    E

     Flashback Version Query and Flashback Transaction Query.


    正确答案： C
    解析： 暂无解析

  • 第24题：

    单选题
    Which pseudocolumn could you use to identify a unique row in a Flashback Versions Query？（）
    A

     XID

    B

     VERSIONS_PK

    C

     VERSIONS_XID

    D

     VERSIONS_UNIQUE


    正确答案： C
    解析： 暂无解析

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