28.choose the best answer Evaluate the following SQL statement: SQL> SELECT promo_id, promo_category FROM promotions WHERE promo_category = 'Internet' ...
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2019-02-21 12:37:11
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27.choosetwoTheSQLstatementsexecutedinausersessionareasfollows:SQL>CREATETABLEproduct(pcodeNUMBER(2),pnameVARCHAR2(10));SQL>INSERTINTOproductVALUES(1,‘pen‘);SQL>INSERTINTOproductVALUE
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2019-02-21 12:30:07
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28.choosethebestanswerEvaluatethefollowingSQLstatement:SQL>SELECTpromo_id,promo_categoryFROMpromotionsWHEREpromo_category=‘Internet‘ORDERBY2DESCUNIONSELECTpromo_id,promo_categoryFROMpromoti
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2019-02-21 12:18:31
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choosethebestanswerEvaluatethefollowingSQLstatement:ALTERTABLEhr.empSETUNUSED(mgr_id);WhichstatementistrueregardingtheeffectoftheaboveSQLstatement?A)AnyviewscreatedontheEMPtablethatincludetheMGR_IDcol
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2019-02-21 11:04:14
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26.choosetwoExaminethestructureofthePRODUCTStable.Whichtwostatementsaretrue?A)EXPIRY_DATEalwaysstoresdateandtimeincharacterformatB)PRICEcanstoreamaximumofeightdigitsandtwodecimals.C)PRODUCT_PICcanstor
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2019-02-21 10:57:46
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choosethebestanswerIntheEMPLOYEEStablethereare1000rowsandemployeesareworkinginthecompanyformorethan10years.EvaluatethefollowingSQLstatement:SQL>UPDATEemployeesSETsalary=NVL(salary,0)+NVL(comm,0),co
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2019-02-20 18:36:19
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5.choosethebestanswerEvaluatethefollowingCREATESEQUENCEstatement:CREATESEQUENCEseq1STARTWITH100INCREMENTBY10MAXVALUE200CYCLENOCACHE;ThesequenceSEQ1hasgeneratednumbersuptothemaximumlimitof200.Youissuet
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2019-02-20 15:58:00
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1.choosethebestanswerWhatistheprimarydifferencebetweentherelationaldatabase(RDB)andobject-orienteddatabase(OODB)models?A)RDBallowsthedefinitionofrelationshipsbetweendifferenttables,whereasOODBdoesnota
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2019-02-19 11:57:35
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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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