计算机专业外文翻译原文数据库管理系统介绍
f扬州大学计算机专业毕业设计外文翻译
外文资料
DatabaseMa
ageme
tSystems
Adatabasesometimesspelleddatabaseisalsocalleda
electro
icdatabasereferri
gtoa
ycollectio
ofdataori
formatio
thatisspeciallyorga
izedforrapidsearcha
dretrievalbyacomputerDatabasesarestructuredtofacilitatethestorageretrievalmodificatio
a
ddeletio
ofdatai
co
ju
ctio
withvariousdataprocessi
goperatio
sDatabasesca
bestoredo
mag
eticdiskortapeopticaldiskorsomeotherseco
darystoragedevice
Adatabaseco
sistsofafileorasetoffilesThei
formatio
i
thesefilesmaybebroke
dow
i
torecordseachofwhichco
sistsofo
eormorefieldsFieldsarethebasicu
itsofdatastoragea
deachfieldtypicallyco
tai
si
formatio
pertai
i
gtoo
easpectorattributeofthee
titydescribedbythedatabaseUsi
gkeywordsa
dvarioussorti
gcomma
dsusersca
rapidly
1
f扬州大学计算机专业毕业设计外文翻译
searchrearra
gegroupa
dselectthefieldsi
ma
yrecordstoretrieveorcreatereportso
particularaggregateofdata
Complexdatarelatio
shipsa
dli
kagesmaybefou
di
allbutthesimplestdatabasesThesystemsoftwarepackagethatha
dlesthedifficulttasksassociatedwithcreati
gaccessi
ga
dmai
tai
i
gdatabaserecordsiscalledadatabasema
ageme
tsystemDBMSTheprogramsi
aDBMSpackageestablisha
i
terfacebetwee
thedatabaseitselfa
dtheusersofthedatabaseTheseusersmaybeapplicatio
sprogrammersma
agersa
dotherswithi
formatio
eedsa
dvariousOSprograms
ADBMSca
orga
izeprocessa
dprese
tselecteddataeleme
tsformthedatabaseThiscapabilitye
ablesdecisio
makerstosearchprobea
dquerydatabaseco
te
tsi
ordertoextracta
swersto
o
recurri
ga
du
pla
edquestio
sthatare
’tavailablei
regularreportsThesequestio
smighti
itiallybevaguea
dorpoorly
2
f扬州大学计算机专业毕业设计外文翻译
defi
edbutpeopleca
“browse”throughthedatabaseu
tiltheyhavethe
eededi
formatio
I
shorttheDBMSwill“ma
age”thestoreddataitemsa
dassemblethe
eededitemsfromthecommo
databasei
respo
setothequeriesofthosewhoare
’tprogrammers
Adatabasema
ageme
tsystemDBMSiscomposedofthreemajorparts1astoragesubsystemthatstoresa
dretrievesdatai
files2amodeli
ga
dma
ipulatio
subsystemthatprovidesthemea
swithwhichtoorga
izethedataa
dtoadddeletemai
tai
a
dupdatethedata3a
da
i
terfacebetwee
theDBMSa
ditsusersSeveralmajortre
dsareemergi
gthate
ha
cethevaluea
duseful
essofdatabasema
ageme
tsystems
Ma
agerswhorequiremoreuptodatai
formatio
tomakeeffectivedecisio
Customerswhodema
di
creasi
glysophisticatedi
formatio
servicesa
dmorecurre
ti
formatio
aboutthestatusr