33.choosethebestanswerViewtheExhibitandexaminethestructureoftheORDER_ITEMStable.ExaminethefollowingSQLstatement:SELECTorder_id,product_id,unit_priceFROMorder_itemsWHEREunit_price=(SELECTMAX(unit_price
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其他好文 时间:
2019-02-25 10:34:03
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239
32.choosethebestanswerViewtheExhibitandexaminethedatainEMPandDEPTtables.IntheDEPTtable,DEPTNOisthePRIMARYKEY.IntheEMPtable,EMPNOisthePRIMARYKEYandDEPTNOistheFOREIGNKEYreferencingtheDEPTNOcolumnintheDE
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数据库 时间:
2019-02-22 14:06:06
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263
30.choosethebestanswerExaminethecommandsusedtocreateDEPARTMENT_DETAILSandCOURSE_DETAILS:SQL>CREATETABLEDEPARTMENT_DETAILS(DEPARTMENT_IDNUMBERPRIMARYKEY,DEPARTMENT_NAMEVARCHAR2(50),HODVARCHAR2(50));
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数据库 时间:
2019-02-22 12:30:54
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214
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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144
27.choosetwoTheSQLstatementsexecutedinausersessionareasfollows:SQL>CREATETABLEproduct(pcodeNUMBER(2),pnameVARCHAR2(10));SQL>INSERTINTOproductVALUES(1,‘pen‘);SQL>INSERTINTOproductVALUE
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其他好文 时间:
2019-02-21 12:30:07
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158
28.choosethebestanswerEvaluatethefollowingSQLstatement:SQL>SELECTpromo_id,promo_categoryFROMpromotionsWHEREpromo_category=‘Internet‘ORDERBY2DESCUNIONSELECTpromo_id,promo_categoryFROMpromoti
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其他好文 时间:
2019-02-21 12:18:31
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136
choosethebestanswerEvaluatethefollowingSQLstatement:ALTERTABLEhr.empSETUNUSED(mgr_id);WhichstatementistrueregardingtheeffectoftheaboveSQLstatement?A)AnyviewscreatedontheEMPtablethatincludetheMGR_IDcol
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其他好文 时间:
2019-02-21 11:04:14
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181
26.choosetwoExaminethestructureofthePRODUCTStable.Whichtwostatementsaretrue?A)EXPIRY_DATEalwaysstoresdateandtimeincharacterformatB)PRICEcanstoreamaximumofeightdigitsandtwodecimals.C)PRODUCT_PICcanstor
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其他好文 时间:
2019-02-21 10:57:46
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295
choosethebestanswerIntheEMPLOYEEStablethereare1000rowsandemployeesareworkinginthecompanyformorethan10years.EvaluatethefollowingSQLstatement:SQL>UPDATEemployeesSETsalary=NVL(salary,0)+NVL(comm,0),co
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其他好文 时间:
2019-02-20 18:36:19
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176
5.choosethebestanswerEvaluatethefollowingCREATESEQUENCEstatement:CREATESEQUENCEseq1STARTWITH100INCREMENTBY10MAXVALUE200CYCLENOCACHE;ThesequenceSEQ1hasgeneratednumbersuptothemaximumlimitof200.Youissuet
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其他好文 时间:
2019-02-20 15:58:00
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155