Which two statements complete a transaction? ()A. DELETE employees;B. DESCRIBE employees;C. ROLLBACK TO SAVE POINT C;D. GRANT SELECT ON employees TO SCOTHE. ALTER TABLE employees SET UNUSED COLUMN sal;F. Select MAX(sal) FROM employees WHERE department _ i

题目
Which two statements complete a transaction? ()

A. DELETE employees;

B. DESCRIBE employees;

C. ROLLBACK TO SAVE POINT C;

D. GRANT SELECT ON employees TO SCOTH

E. ALTER TABLE employees SET UNUSED COLUMN sal;

F. Select MAX(sal) FROM employees WHERE department _ id 20;

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更多“Which two statements complete a transaction? () ”相关问题

  • 第1题：

    哪个消息是MGC发给MG的心跳消息?()

    A、!/1[192.168.6.71]:2944Transaction=20{Context=-{AuditValue=ROOT{Audit{}}}}

    B、!/1[192.168.6.71]:2944Transaction=5{Context=-{Auditcapability=A0{Audit{Media,packages}}}}

    C、!/1[191.2.6.213]:2944Transaction=275{Context=-{Notify=ROOT{ObservedEvents=0{19700101T01153516:it/ito}}}}

    D、!/1[192.168.1.119]:2944Transaction=2050{Context=-{AuditValue=ROOT{Audit{Package s}}}}


    参考答案：A

  • 第2题：

    WhichtwostatementsregardingtheFLASHBACK_TRANSACTION_QUERYviewarecorrect?()

    A.Youcanfindinformationaboutonlyactivetransactionsfromtheview

    B.Youcanfindinformationaboutreadonlytransactionsfromtheview

    C.YourequiretheSELECTANYTRANSACTIONsystemprivilegetoaccesstheview

    D.Youcanfindinformationaboutbothactiveandcommittedtransactionsfromtheview

    E.YourequiretheSELECTONFLASHBACK_TRANSACTION_QUERYobjectprivilegetoaccesstheview


    参考答案：C, D

  • 第3题：

    12． About_______ of the workers in the factory were born in the __________．

    A． two- thirds;1970

    B． two- thirds ; 1970s

    C． two-third ; 1970

    D． two-third ; 1970s


    正确答案：B
    12．B【解析】句意：工厂里大约2/3的工人出生在20世纪70年代。分数的表达为分子用基数词，分母用序数词，如果分子大于1，则分母要用复数，排除C、D，年代的表达要在年份后加s．故选B。

  • 第4题：

    A programmer must know about a function's ______ to call it correctly.

    A．location

    B．algorithm

    C．Interface

    D．statements


    正确答案：D
    解析：译文的含义是：程序员需要知道函数的()才能正确调用该函数。A、B、C、D各选项的意思分别是：位置、算法、接口、声明。要正确地调用一个函数，必须知道它的声明，故本题应该选择D。

  • 第5题：

    About ________ of the workers in the factory were born in the ________.

    A.two-thirds, 1970 B.two-thirds, 1970s C.two-third,1970 D.two-third, 1970s


    正确答案：B

  • 第6题：

    Norman Blarney is an artist of deep convictions.

    A: claims
    B:suggestions
    C: beliefs
    D:statements

    答案：C
    解析：
    句意：诺曼.布莱梅是一个有坚定信念的艺术家，句中画线部分conviction意为 “信念”。claim意为“要求，声称”。suggestion意为“建议”。belief意为“相信，信赖”。 statement意为“声明，陈述”。画线部分和C项意义接近。故选C项。

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