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如果希望横向合并后的数据文件只包括第一个数据文件中的个案，则应当选择（）A、Both  file  iprovide  casesB、External  file  is  keyed  tableC、Working  data  file  is  keyed  tableD、Indicate  case  source  as  variable

题目

如果希望横向合并后的数据文件只包括第一个数据文件中的个案，则应当选择（）

  • A、Both  file  iprovide  cases
  • B、External  file  is  keyed  table
  • C、Working  data  file  is  keyed  table
  • D、Indicate  case  source  as  variable
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相似问题和答案

第1题：

Which four actions are possible during an Online Data file Move operation?()

A. Creating and dropping tables in the data file being moved

B. Performing file shrink of the data file being moved

C. Querying tables in the data file being moved

D. Performing Block Media Recovery for a data block in the data file being moved

E. Flashing back the database

F. Executing DML statements on objects stored in the data file being moved


参考答案：A, C, D, F

第2题：

在Visual FoxPro中，执行下列命令后，当前打开的数据库文件名是（ ）。 Number=”5” File=”File”+Number USE&File

A.File Number

B.&File

C.file5

D.Data Base File


正确答案：C
执行题目所示的程序段{Number=”5”File=”File”+Number}后，变量File的值变为“File5”。因此本题中应该打开的数据库为File5，答案为选项C。

第3题：

●( 72) is a file that contains metadata-that is, data about data.

●(72) A. document

B. Excel table

C. database

D. data dictionary


正确答案：D

第4题：

阅读FORTRAN程序：
OPEN(8，FILE=FILE2 DAT,STATUS=NEW)
DO 10 I=1，3
WEITE(8，(4I4)JI+I,J=1，4)
10 CONTINUE
CLOSE(8)
END
程序运行后，数据文件FILE2，DAT的内容是：


答案：A
解析：

第5题：

The(72)turns the source file into an object file and the(73)turns the object file into an executable file.

A．translator

B．compiler

C．interpreter

D．linker


正确答案：B
解析：译文：编译程序将源文件转换成目标文件，连接程序将目标文件转换成可执行文件。

第6题：

A （72） is a file that contains metadata—that is,data about data.

A.document

B.Excel table

C. database

D.data dictionary


正确答案：D
数据字典是一个包含了元数据的文件，元数据是关于数据的数据。

第7题：

You are the administrator of a SQL Server 2000 computer. The server contains a database named Acct. You purge the Acct database of old records and perform. a full backup. The database now uses 4 GB of space. The database files are configured as shown in the Acct Properties exhibit.

The server has two hard disks that are configured as shown in the Server Configuration exhibit.

The 3 GB transaction log file for the Acct database is stored on drive C. You need to make room for a new database that has a 3 GB data file and a 1 GB transaction log file. You want to optimize database performance on both databases. You also want to minimize administrative overhead.

What should you do?

A．Shrink the empty data file on drive E. Place the new data file and the new log file on drive E.

B．Shrink the empty data file on drive E. Backup and shrink the log file on drive C to 2 GB. Place the new data file on drive E and the new log file on drive C.

C．Shrink the data file on drive D to 1 GB, and then shrink the data file on drive E to 2 GB. Place the new data file on drive D and the new log file on drive E.

D．Shrink and delete the data file on drive C, and then shrink the database files on drives D and E so that they are both 2 GB. Place the new data file and the new log file on drive C.


正确答案：B
解析：Explanation: We must add a new 3GB database with a 1GB transaction log file. Currently we have database that is using 4GB for data and 3GB for the log file. We should place the log file and the data file on two different physical disks out of performance reasons.

The command DBCC SHRINKFILE with the EMPTYFILE option can be used to shrink a datafile to empty. The data will be migrated to the other files in the filegroup. We use this method to free 4.5 GB on Drive E. Then we backup the log file on C and reduce it to 2GB. Then we put the database data file on drive (3GB) and put the log file of the new database on drive C (1GB).

Incorrect answers:
A: It’s better to put the data file and the log file of the new database on two different physical disks out of performance reasons.

C: It’s better to put the data file and the log file of the new database on two different physical disks out of performance reasons.

D: It’s better to put the data file and the log file of the new database on two different physical disks out of performance reasons.

第8题：

Which statement describes the ROWID data type? ()

A. Binary data up to 4 gigabytes.

B. Character data up to 4 gigabytes.

C. Raw binary data of variable length up to 2 gigabytes.

D. Binary data stored in an external file, up to 4 gigabytes.

E. A hexadecimal string representing the unique address of a row in its table.


参考答案：E

第9题：

●A (72) is a file that contains metadata—that is，data about data.

(72)A．document

B．Excel table

C. database

D．data dictionary


正确答案：D

第10题：

A data ( ) is a file that contains metadata - that is, data about data.

A.structure
B.table
C.base
D.dictionary

答案：D
解析：
数据字典就是包含元数据的文件，即关于数据的数据。

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