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Which of the following is TRUE for the DB2 isolation level C

题目
单选题
Which of the following is TRUE for the DB2 isolation level Cursor Stability (CS)?（）
A

An application process acquires at least a share lock on the current row of every cursor.

B

Any row that is read during a unit of work cannot be changed by other application processes until the unit of work is complete.

C

Any row changed by another application process can be read, even if the change has not been committed by that application process.

D

An application process that issues the same query more than once in a unit of work will not see additional rows caused by other application processes appending new information to the database.

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相似问题和答案

第1题：

Which of the following DB2 objects are publicly referenced names that require no special authority or privilege to use them?()

A.View

B.Alias

C.Table

D.Package


参考答案：B

第2题：


Which of the following is TRUE according to the text？( )

A.The principle of gene therapy is applicable to that of cloning.
B.The isolation of stem cells is too difficult to be feasible.
C.It is reasonable for all body instructions to be activated.
D.Cloned animals will eventually take control of the world.

答案：A
解析：

第3题：

Examine the following command used to perform incremental level 0 backup:RMAN> BACKUP INCREMENTAL LEVEL 0 DATABASE;To enable the block change tracking, after the incremental level 0 backup you issued the following command:SQL> ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USINGFILE ‘/mydir/rman_change_track.f‘;To perform incremental level 1 cumulative backup, you issued the following command:RMAN> BACKUP INCREMENTAL LEVEL 1 CUMULATIVE DATABASE;Which two statements are true in the above situation?（）

A. The block change tracking data will be used only from the next incremental 0 backup.

B. The incremental backup will use change tracking data for accomplishing the backup.

C. The incremental backup will not use change tracking data for accomplishing the backup.

D. The block track file will scan all the blocks and create bitmap for all the blocks backed up in the level 0 backup.


参考答案：A, C

第4题：

Which of the following can transmit block level storage over Ethernet？（）

  • A、SAS
  • B、iSCSI
  • C、USB
  • D、SATA

正确答案:B

第5题：

A site administrator is configuring Resource-level access control.  Which of the following statements about Resource-level access control are true？ Resource-level access control policies：（）

  • A、are optional
  • B、are used to protect data beans
  • C、provide coarse-grained access control
  • D、never specify a relationship

正确答案:A,B

第6题：


Which of the following is TRUE according to the text？( )

A.The principle of gene therapy is applicable to that of cloning
B.The isolation of stem cells is too difficult to be feasible
C.It is reasonable for all body instructions to be activated
D.Cloned animals will eventually take control of the world

答案：A
解析：

第7题：

Given the following ALTER SEQUENCE statement: ALTER SEQUENCE myseq RESTART WITH 0 INCREMENT BY 1 NO MAXVALUE CACHE 5 ORDER Assuming that the sequence had reached a value of 100 prior to the RESTART, which of the following is true?（）

  • A、The next value will be 0 and the sequence will never use the values 101 to 105.
  • B、The next value will be 101 to ensure uniqueness between existing and newly generated sequence values.
  • C、Previously cached values are retained by DB2, and after the restart, will be used for values 101 to 105.
  • D、The next value will be 0 and DB2 will not ensure uniqueness between existing and newly generated values.

正确答案:D

第8题：

Which of the following DB2 data types has a fixed length?()

A.XML

B.BLOB

C.DOUBLE

D.DBCLOB


参考答案：C

第9题：

Which of the following BIOS level settings allow an administrator to view warnings on possiblehardware level changes?（）

  • A、Drive lock
  • B、Intrusion detection
  • C、BIOS password
  • D、Trusted platform module

正确答案:B

第10题：

Which ONE of the following statements about Domino Enterprise server is true？（）

  • A、Can host Active Server Pages Web sites
  • B、Can host PHP Web sites
  • C、Includes a DB2 server
  • D、Includes an integrated Web application server

正确答案:D

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