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數(shù)據(jù)庫系統(tǒng)原理ppt課件-閱讀頁

2025-05-15 18:24本頁面
  

【正文】 insertingthe武漢大學(xué)國際軟件學(xué)院36問題 35:Givenstatement: TABLE c1NOT c2PRIMARY FOREIGNREFERENCES manyindexesdefinedtable0B.2D.武漢大學(xué)國際軟件學(xué)院37問題 36:WhichtheCANNOTusedrestrictvaluesbeingintocolumnatable?viewB.checkreferentialoffollowingifapplicationabnormallyanunitwork?Currentofis B.unitworkrolled C.unitworkactiveCurrentofmovespending武漢大學(xué)國際軟件學(xué)院39問題 38:WhichthedescribessavepointsNOTinsideatomicofAtomicofspandatabases,savepointslimitedunitsworkoperateadatabase.B.savepointthatsubsetthemayallowedsucceed,atomicmustorasunit.C.savepointanmitbeandstatementsnotinoperationsasSQL.D.savepointbewithoutactivetodatabase,atomiccanaassubstatementoffollowingtheoffollowingstatement:ALTERtable1col2WITHA. ThefailsaSQLB. Thefailsnovalue specified.newcalledisto andwithD. AcolumnCOL2addedTABLE1populatednulls.newcalledwhich containisto武漢大學(xué)國際軟件學(xué)院41問題 40:Givenfollowingstatement:CREATEnewtab1tab1Whichthewouldasresulttheexecution?A.NEWTAB1sameasiswithdataC.NEWTAB1theprimaryasNEWTAB1haveattributesTAB1theTAB1 TAB2C1 C2 CX CY A 11 A 21B 12 C 22C 13 D 23Theresultsdesired:offollowingwilltheresults?SELECTFROMtab2c1=cxSELECTFROMINNERtab2c1=cxSELECTFROMFULLJOINOND.*tab1OUTERtab2c1=cxtheSQLTABLE(col1TABLE(col1INTOVALUESINTOVALUESCOUNT(*)tab1 WHEREIN(SELECTFROMoffollowingtheofSELECTstatement?12340武漢大學(xué)國際軟件學(xué)院44問題 43:GiventwotableORGSTAFFdeptnumb INTEGERdeptnamenameINTEGERdeptjobyearsINTEGERDECIMAL(10,2)moffollowingwilleachbyandtotalofemployeestheA. ,FROMa,b=BYSELECTSUM()staffWHEREORDERC. ,FROMa,b=BYSELECTSUM()staffWHEREGROUP 武漢大學(xué)國際軟件學(xué)院 45問題 44:NamesName Gretzky99Jaromir68Bobby4Bobby23Brett16Mario66Steve19Claude19Mark11Mats13武漢大學(xué)國際軟件學(xué)院Giventwotables: PointsName PointsWayneJagrOrr Hull Hull Lemieux 189Joe94Whichthestatementsdisplayplayer’snumberspointsallwithentrybothSELECT,FROMINNERpoints=B.,namesOUTERpoints=C.,namesOUTERpoints=D.,namesOUTERpoints= 46問題 45:Givenfollowingdefinition: Thecolumnthesetypes:clerk,salesperson.Whichthestatementsreturndataalltogether,clerksandsalespeopleinoutput?*staffBYjob,FROMGROUPname,*staffBYjob,dept,salary,*staffBYjob,dept,salary, 武漢大學(xué)國際軟件學(xué)院 47問題 46:Givenfollowingdefinition: offollowingstatementsreturntotalofindepartmentthedepartmentunderfollowingOnlydepartmentsatonereceivingmissionthanresultbebydepartmentfromtodept,FROMWHEREGROUPdeptBYDESCB.SELECTCOUNT(*)staffBYHAVINGORDER2dept,FROMWHEREGROUPdept,ORDER2dept,COUNT(id)staffWHEREGROUPdept, ORDER3theT1by:CREATEt1(idNULLALWAYSIDENTITY,c1NOTCHAR(10)offollowingstatementssucceed?INSERTt1(1,abc39。NULL)INSERTt1(1,39。)INSERTt1c2)(39。,D.INTO(c1,VALUES39。)offollowingbewithsinglestatement?UpdatingtablesUpdatingviewoftablesUpdatingtablesonWHERED.abasedausingtablesoffollowingstatementsremoverowsanamedDELETE B.FROM C.*countryDELETEFROM武漢大學(xué)國際軟件學(xué)院51問題 50:GiventableandstatementsArgentina 1 Canada 2 Cuba10 4 0 5 5c1WITHFOR*countryBYname OPEN FETCH FETCH COMMITc1WhichtheislastobtainedtheB.FranceD.Germany16
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