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华南农业大学期末考试试卷(A卷)
2006学年第一学期考试科目:数据库原理与方法
学号
考试类型:(闭卷)
姓名
考试时间: 120 分钟
年级专业2004
题号得分
评阅人
— 二 三
四
五 六 七 总分
Instructionstocandidates:
Thispaperconsistsof7questions.
Answerallquestionsontheanswersheets.
Handintheanswersheets,andthispapercanbetakenaway.
Question1:(20marks)Definethefollowingterms.Eachtermisworth2marks.
DBMS
Metadata
Entity-relationshipdatamodel
CandidateKey
DDLandDML
ACID
Deadlock
Concurrencyschedule
Timestamp
Log
Question2:(21marks)Considerafactorymanagementdatabaseincludingthefollowingdataobjects:
factory:Eachfactoryhasaname,alocation,andafactorydirectorname.A
factoryhasworkshopsanddepositories.
workshop:Eachworkshophasauniqueid,aworkshopdirector,alocationandatelephonenumber.Accessoriesandproductsaremanufacturedintheworkshops.
depository:Eachdepositoryhasauniqueid,adepositorydirectoranda
telephonenumber.Accessoriesandproductsarestoredinthedepository.
accessory:Eachaccessoryhasauniqueid,aweightandaprice.
product:Eachproducthasauniqueidandaprice.
worker:Eachworkerhasauniqueid,aname,anage,atypeofwork.Start_dateindicatesthedateofstartingtoworkinaworkshop,andemployee_lengthindicatesthelengthofworkinginaworkshop;
Thesystemrequirementsare:
Afactoryhasmorethanoneworkshopandmorethanonedepository.
Aworkshophasmorethanoneworkersandeachworkeronlyworksforoneworkshop.
Aworkshopcanmakevariousaccessoriesandproducts.Thenumberof
accessoriesandthenumberofproductsmanufacturedineachworkshopisrecordedrespectively.
Adepositor stores various accessories and products. The number of
accessoriesandthenumberofproductsstoredineachdepositorisrecordedrespectively.
Eachaccessorycanbemanufacturedbymorethanoneworkshop.Similarly,
eachproductalsocanbemanufacturedbymorethanoneworkshop.
Aproductcanbemadebyvarious
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