更多“● A query is used to search through the database to locate a particular record or records, ”相关问题
  • 第1题:

    Youexecutedthefollowingcommandtostartthedatabase:SQL>STARTUPORACLEinstancestarted.TotalSystemGlobalArea281018368bytesFixedSize789000bytesVariableSize229635576bytesDatabaseBuffers50331648bytesRedoBuffers262144bytesORA-00205:errorinidentifyingcontrolfile,checkalertlogformoreinfoWhichviewwouldyouqueryatthisstagetoinvestigatethismissingcontrolfile?()

    A.V$INSTANCE

    B.V$CONTROLFILE

    C.DBA_CONTROL_FILES

    D.V$DATABASE_PROPERTIES

    E.V$CONTROLFILE_RECORD_SECTION


    参考答案:B

  • 第2题:

    What are the usable hosts on the .128.0/19 network?()

    A. .128.1 through .143.254

    B. .128.128 through .134.254

    C. .128.0 through .134.254

    D. .128.1 through .159.254


    参考答案:D

  • 第3题:

    assuming the default switch configuration which vlan range can be added modified and removed on a cisco switch?()

    A.2 through 1001

    B.1 through 1001

    C.1 through 1002

    D.2 through 1005


    参考答案:A

  • 第4题:

    At10:30A.M.,youranabatchjobbymistake,whichexecutedatransactioninthedatabase.Thetransactionidentifierofthetransactionthatmadetothechangesinthedatabaseis0500A00627B000.At11:10A.M.,youstoppedthebatchjob.Now,youwanttoidentifythechangesmadetothedatabasetablesbythebatchjob.Whichviewwillyouquery?()

    A.DBA_PENDING_TRANSACTIONS

    B.DBA_AUDIT_STATEMENT

    C.V$FLASHBACK_DATABASE_STATS

    D.FLASHBACK_TRANSACTION_QUERY


    参考答案:D

  • 第5题:

    表中相对移动记录指针和绝对移动记录指针的命令分别为

    A.LOCATE和SKIP

    B.LOCATE和GO

    C.SKIP和GO

    D.LOCATE和FIND


    正确答案:C
    解析:本题考查的是移动记录指针的命令。在Visual FoxPro中,移动定位记录指针的命令有 3个。①GOTO或者GO命令。该命令的功能是直接按记录号定位。命令格式为: GO nRecordNumber TOP | BOTTOM其中nRecordNumber是记录号,即直接按记录号定位。②SKIP命令。该命令的功能是当确定了当前记录位置之后,可以用它向前或向后移动若干条记录位置。命令格式为: SKIP [nRecords]其中nRecords可以是正或负的整数,默认是1。③LOCATE命令。该命令的功能是按条件定位记录位置的命令。该命令的格式为: LOCATE FOR 1Expression1其中1Expression1是查询或定位的表达式。因此本题的正确答案应该是C。

  • 第6题:

    The correct pronunciation of the underlined letters in the word "particular"
    is __________.


    答案:C
    解析:
    考查字母组合的发音。题目问“particular”这个词中下划线部分的发音。这个单词的发音