1.choosethebestanswerWhatistheprimarydifferencebetweentherelationaldatabase(RDB)andobject-orienteddatabase(OODB)models?A)RDBallowsthedefinitionofrelationshipsbetweendifferenttables,whereasOODBdoesnota
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2019-02-19 11:57:35
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354
18、(8-7)choosetwoWhichtwostatementsaretrueregardingviews?(Choosetwo.)A)Asimpleviewinwhichcolumnaliaseshavebeenusedcannotbeupdated.B)TheORREPLACEoptionisusedtochangethedefinitionofanexistingviewwithout
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2019-02-19 10:23:31
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17、(7-11)choosetwoViewtheExhibitandexaminethestructureofORDER_ITEMSandORDERStables.YouneedtoremovefromtheORDER_ITEMStablethoserowsthathaveanorderstatusof0or1intheORDERStable.WhichtwoDELETEstatementsar
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2019-02-19 10:22:42
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18、(8-7) choose twoWhich two statements are true regarding views? (Choose two.) A) A simple view in which column aliases have been used cannot be upda ...
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2019-02-19 10:22:14
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16、(7-5)choosethebestanswerThePRODUCTStablehasthefollowingstructure:EvaluatethefollowingtwoSQLstatements:SQL>SELECTprod_id,NVL2(prod_expiry_date,prod_expiry_date+15,‘‘)FROMproducts;SQL>S
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2019-02-18 17:29:11
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15、(6-24)choose the best answerExamine the structure of the MEMBERS table:You want to display details of all members who reside in states starting wit ...
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2019-02-18 16:18:09
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1104
14、(6-13)choosethebestanswer:ViewtheExhibitandexaminethestructureoftheORDERStable.WhichUPDATEstatementisvalid?A)UPDATEordersSETorder_date=‘12-mar-2007‘ANDorder_total=TO_NUMBER(NULL)WHEREorder_
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2019-02-18 16:14:43
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15、(6-24)choosethebestanswerExaminethestructureoftheMEMBERStable:YouwanttodisplaydetailsofallmemberswhoresideinstatesstartingwiththeletterAfollowedbyexactlyonecharacter.WhichSQLstatementmustyouexecute
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2019-02-18 16:13:28
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157
13、(6-7)choosetwoWhichtwostatementsaretrueregardingoperatorsusedwithsubqueries?(Choosetwo.)A)=ANYand=ALLoperatorshavethesamefunctionality.E)TheNOTINoperatorisequivalenttoisNULL.C)The<ANYoperatormea
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2019-02-18 16:05:20
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12、(5-12)choosetwo:ExaminethedataintheCUSTOMERStable:Youwanttolistallcitiesthathavemorethanonecustomeralongwiththecustomerdetails.Evaluatethefollowingquery:SQL>SELECTc1.custname,c1.cityFROMCustomer
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其他好文 时间:
2019-02-15 18:02:42
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185