Examine the structure of the EMPLOYEES table:You issue these statements:At the end of this transaction, what is true?()A. You have no rows in the table.B. You have an employee with the name of James.C. You cannot roll back to the same savepoint more than

题目
Examine the structure of the EMPLOYEES table:You issue these statements:At the end of this transaction, what is true?()

A. You have no rows in the table.

B. You have an employee with the name of James.

C. You cannot roll back to the same savepoint more than once.

D. Your last update fails to update any rows because employee ID 180 was already eleted.

相似考题

1.What()_ you()__this time tomorrow?A.will…doB.will…have doneC.will…be doneD.will…be doing

2.is, table, the, on, what__________________________________________________________________________?

3.What () you () at eight o'clock tomorrow morning?A、are; doingB、do; youC、will; doD、will; be doing

4.下列CASE语句中执行结果不为空的是()A、SELECTCASEWHEN125THEN'true'ELSE'false'END;B、SELECTCASEBINARY'B'WHEN'a'THEN1WHEN'b'THEN2END;C、SELECTCASEWHEN-10THEN'true'END;D、SELECTCASE'one'WHEN1THEN'one'WHEN2THEN'two'END;

更多“Examine the structure of the EMPLOYEES table:You issue these statements:At the end of this transaction, what is true?() ”相关问题

  • 第1题：

    Once you’re into basketball, you’ll find() great fun to play as a way to relax.

    A、it

    B、that

    C、this

    D、what


    参考答案：A

  • 第2题：

    Youexecutedthefollowingquery:SELECToperation,undo_sql,table_nameFROMflashback_transaction_queryWhichstatementiscorrectregardingthequeryoutput?()

    A.Itwouldreturninformationregardingonlythelastcommittedtransaction.

    B.Itwouldreturnonlytheactivetransactionsinalltheundosegmentsinthedatabase.

    C.Itwouldreturnonlythecommittedtransactionsinalltheundosegmentsinthedatabase.

    D.Itwouldreturnbothactiveandcommittedtransactionsinalltheundosegmentsinthedatabase.

    E.Itwouldreturninformationregardingthetransactionsthatbeganandwerecommittedinthelast30minutes.


    参考答案：D

  • 第3题：

    Youexecutedthefollowingquery:SELECToperation,undo_sql,table_nameFROMflashback_transaction_query;Whichstatementiscorrectregardingthequeryoutput?()

    A.Itwouldreturninformationregardingonlythelastcommittedtransaction.

    B.Itwouldreturnonlytheactivetransactionsinalltheundosegmentsinthedatabase.

    C.Itwouldreturnonlythecommittedtransactionsinalltheundosegmentsinthedatabase.

    D.Itwouldreturnbothactiveandcommittedtransactionsinalltheundosegmentsinthedatabase.

    E.Itwouldreturninformationregardingthetransactionsthatbeganandwerecommittedinthelast30minutes.


    参考答案：D

  • 第4题：

    What's ( )job? Are ( ) British?

    A. your, your

    B. you, your

    C. your, you


    正确答案：C

  • 第5题：

    —What______you _______at ten o' clock yesterday﹖ —I_______ in class.

    A、were doing studied

    B、was doing was studying

    C、were doing was studying

    D、was doing studied


    正确答案：C

  • 第6题：

    You look（） What（）you（）?

    Atire；did；do

    Btiring；have；done

    Ctired；do；do

    Dtired；have；been doing


    D
    略

相关内容