单选题which one of the following accurately describes field names?（）A they must be unique in a database  B they can only be used once in a view  C they can only used once on each form  D they can be used mulriple times on a form 

题目
单选题
which one of the following accurately describes field names?（）
A

they must be unique in a database  

B

they can only be used once in a view  

C

they can only used once on each form  

D

they can be used mulriple times on a form 

相似考题

1.●Which one of these statements about connecting to the Internet is true? (68) .(68) A．The Internet can only be used to link computers with same operating systemB．The Internet can be used to connect computers with different ISPC．You must have a telephone line to connect to the InternetD．You must have a modem to connect to the Internet

2.You want to perform an RMAN backup of database as a copy. Which two factors will you consider while performing the backup operation?()A. The backup as copy can only be taken to diskB. The backup as copy can only be taken to tapeC. Backup can be performed only when the instance is shutdownD. Backup will constitute all used and unused blocks in the database

3.Which two statements are true about the Automatic Diagnostic Repository (ADR)?() (Choose two.)A. The ADR base keeps all diagnostic information in binary formatB. SQL*Plus provides the ADRI script, which can be used to work with ADRC. The ADR can be used for problem diagnosis only when the database is openD. The ADR can be disabled by settting the DIAGNOSTIC_DEST parameter to nullE. The ADR can be used for problem diagnosis even when the database instance is downF. The ADR base is shared across multiple instances

4.Which one of these statements about connecting to the Internet is true?(68).A．The Internet can only be used to link computers with same operating systemB．The Internet can be used to connect computers with different ISPC．You must have a telephone line to connect to the InternetD．You must have a modem to connect to the Internet

更多“单选题which one of the following accurately describes field names?（）A they must be unique in a database  B they can only be used once in a view  C they can only used once on each form  D they can be used mulriple times on a form”相关问题

  • 第1题：

    You want to perform an RMAN backup of database as a copy. Which two factors will you consider whileperforming the backup operation?() (Choose two).

    A. The backup as copy can only be taken to disk

    B. The backup as copy can only be taken to tape

    C. Backup can be performed only when the instance is shutdown

    D. Backup will constitute all used and unused blocks in the database


    参考答案：A, D

  • 第2题：

    Which of the following constraint types can be used to ensure the value of an INTEGER column references only positive values?()

    A.Unique

    B.Check

    C.Referential

    D.Informational


    参考答案：B

  • 第3题：

    What is the use of an "all configuration" backup in Cisco UCS？（）

    • A、 Can be used to migrate from a 6120 to a 6140 and retain the same service profiles
    • B、 Can only be used on the fabric interconnect on which it was created
    • C、 Can be used to migrate from a 6120 to 6140 and retain system IP addresses and cluster information
    • D、 Can be used to match firmware versions between 6120 and 6140 during a migration

    正确答案:A

  • 第4题：

    which one of the following best where layer can be used?（）

    • A、form 
    • B、page 
    • C、subform 
    • D、all of the above

    正确答案:B

  • 第5题：

    which one of the following types of actions can be used on unopened doc?（）

    • A、 form action 
    • B、 view action 
    • C、 hotspot action 
    • D、 db action

    正确答案:B

  • 第6题：

    Which two statements are true about the Automatic Diagnostic Repository （ADR）？（） 

    • A、 The ADR base keeps all diagnostic information in binary format
    • B、 SQL*Plus provides the ADRI script， which can be used to work with ADR
    • C、 The ADR can be used for problem diagnosis only when the database is open
    • D、 The ADR can be disabled by settting the DIAGNOSTIC_DEST parameter to null
    • E、 The ADR can be used for problem diagnosis even when the database instance is down
    • F、 The ADR base is shared across multiple instances

    正确答案:E,F

  • 第7题：

    What is true about sequences? （）

    • A、Once created, a sequence belongs to a specific schema.
    • B、Once created, a sequence is linked to a specific table.
    • C、Once created, a sequence is automatically available to all users.
    • D、Only the DBA can control which sequence is used by a certain table.
    • E、Once created, a sequence is automatically used in all INSERT and UPDATE statements.

    正确答案:A

  • 第8题：

    Which two statements are true about the Automatic Diagnostic Repository (ADR)?（） (Choose two.)

    • A、The ADR base keeps all diagnostic information in binary format
    • B、SQL*Plus provides the ADRI script, which can be used to work with ADR
    • C、The ADR can be used for problem diagnosis only when the database is open
    • D、The ADR can be disabled by settting the DIAGNOSTIC_DEST parameter to null
    • E、The ADR can be used for problem diagnosis even when the database instance is down
    • F、The ADR base is shared across multiple instances

    正确答案:E,F

  • 第9题：

    单选题
    Which of the following constraint types can be used to ensure the value of an INTEGER column references only positive values?（）
    A

    Unique

    B

    Check

    C

    Referential

    D

    Informational


    正确答案： C
    解析： 暂无解析

  • 第10题：

    单选题
    What is the use of an "all configuration" backup in Cisco UCS？（）
    A

     Can be used to migrate from a 6120 to a 6140 and retain the same service profiles

    B

     Can only be used on the fabric interconnect on which it was created

    C

     Can be used to migrate from a 6120 to 6140 and retain system IP addresses and cluster information

    D

     Can be used to match firmware versions between 6120 and 6140 during a migration


    正确答案： D
    解析： 暂无解析

  • 第11题：

    多选题
    Which two statements are true about WHERE and HAVING clauses? （）
    A

    A WHERE clause can be used to restrict both rows and groups.

    B

    A WHERE clause can be used to restrict rows only.

    C

    A HAVING clause can be used to restrict both rows and groups.

    D

    A HAVING clause can be used to restrict groups only.

    E

    A WHERE clause CANNOT be used in a query of the query uses a HAVING clause.

    F

    A HAVING clause CANNOT be used in subqueries.


    正确答案： B,D
    解析： 暂无解析

  • 第12题：

    单选题
    which one of the following types of actions can be used on unopened doc?（）
    A

     form action 

    B

     view action 

    C

     hotspot action 

    D

     db action


    正确答案： D
    解析： 暂无解析

  • 第13题：

    A user copied files from a CD and now the files can only be opened as read－only. Which of the following utilities can be used to allow the user the ability to edit the files?()

    A.EDIT

    B.CHMOD

    C.ATTRIB

    D.CONVERT


    参考答案：C

  • 第14题：

    Which of the following constraint types can be used to ensure the value of an INTEGER column references only positive values?（）

    • A、Unique
    • B、Check
    • C、Referential
    • D、Informational

    正确答案:B

  • 第15题：

    Which of the following statements about a Sales Catalog is TRUE？（）

    • A、A store can only have one sales catalog.
    • B、A sales catalog is used to bundle similar products.
    • C、A sales catalog may be used to place a product in more than one category.
    • D、Every store must have a sales catalog.

    正确答案:C

  • 第16题：

    A user copied files from a CD and now the files can only be opened as read-only. Which of the following utilities can be used to allow the user the ability to edit the files?（）

    • A、EDIT
    • B、CHMOD
    • C、ATTRIB
    • D、CONVERT

    正确答案:C

  • 第17题：

    which one of the following accurately describes field names?（）

    • A、they must be unique in a database  
    • B、they can only be used once in a view  
    • C、they can only used once on each form  
    • D、they can be used mulriple times on a form 

    正确答案:C

  • 第18题：

    Which two statements are true about WHERE and HAVING clauses? （）

    • A、A WHERE clause can be used to restrict both rows and groups.
    • B、A WHERE clause can be used to restrict rows only.
    • C、A HAVING clause can be used to restrict both rows and groups.
    • D、A HAVING clause can be used to restrict groups only.
    • E、A WHERE clause CANNOT be used in a query of the query uses a HAVING clause.
    • F、A HAVING clause CANNOT be used in subqueries.

    正确答案:B,D

  • 第19题：

    You want to perform an RMAN backup of database as a copy. Which two factors will you consider while performing the backup operation？（）

    • A、 The backup as copy can only be taken to disk
    • B、 The backup as copy can only be taken to tape
    • C、 Backup can be performed only when the instance is shutdown
    • D、 Backup will constitute all used and unused blocks in the database

    正确答案:A,D

  • 第20题：

    You want to perform an RMAN backup of database as a copy. Which two factors will you consider whileperforming the backup operation?（） (Choose two).

    • A、The backup as copy can only be taken to disk
    • B、The backup as copy can only be taken to tape
    • C、Backup can be performed only when the instance is shutdown
    • D、Backup will constitute all used and unused blocks in the database

    正确答案:A,D

  • 第21题：

    单选题
    A user copied files from a CD and now the files can only be opened as read-only. Which of the following utilities can be used to allow the user the ability to edit the files?（）
    A

    EDIT

    B

    CHMOD

    C

    ATTRIB

    D

    CONVERT


    正确答案： D
    解析： 暂无解析

  • 第22题：

    单选题
    Which of the following statements about a Sales Catalog is TRUE？（）
    A

    A store can only have one sales catalog.

    B

    A sales catalog is used to bundle similar products.

    C

    A sales catalog may be used to place a product in more than one category.

    D

    Every store must have a sales catalog.


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    which one of the following accurately describes field names?（）
    A

    they must be unique in a database  

    B

    they can only be used once in a view  

    C

    they can only used once on each form  

    D

    they can be used mulriple times on a form 


    正确答案： C
    解析： 暂无解析

  • 第24题：

    问答题
    Can you find the missing value on the roof of the following house? Each of the numbers on the windows and door must be used only once and no number can be reversed.

    正确答案： 175
    解析： 310=（17+14）×10,即：两个窗户的数字相加再乘以门上的数字，因此很容易算出屋顶上的数字为(12+23)×5=175。

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