Luận văn Hệ thống hỗ trợ kiểm tra tính đúng đắn của mô hình DFD

CHUaNG 1 MO HitiH xU LY DFD (DATA FLOW DIAGRAM) <)\ Trang: 4 1.Phu'dngphapphantichDFD [3] - 1.1.T~isaophiiicocongC\ld~h6trqvi~cphantfchthie'tke'? Khi xayd\l'ngmQth~thongthongtinngoainhungkh6khanv'eky thu~t,slf thie'uhi€u bie'tv'ekie'nthucqUailIy cuah~thongdangduQcxaydlfng,conmQt kh6khankhongkemph'anquailtn;mgla cacvand'etraGd6i thongtin:giii'a nhii'ngnguaic6 trinhdQkhacnhautrangnh6mphattri€n xaydlfngh~thong, giii'anhungnguaid~ithang,nguaisad~ngvanh6mphattri€n h~thong.Cackh6 khanth€ hi~nd mQtsodi€m c~th€ sail: a.ThongthuangcacnhaqUailIy thuangd~tcacyellc'auchungchungv'eh~ thongmahQc'an,vanguaisad~ngthichibie'tcaccongvi~ctrangph~mvi cua minhmaitbie'tde'nmoilienh~voicacbQph~nkhac.Vi v~ymaphantichvien phaibie'tcachgQimdvadungmQtphuongphapnaGd6d€ nguaidunghi€u r6 honcaccongvi~ccuaminh. b. Ph'anIon nguaislYd~lllgkhongth€ hinhdungduQcslfho~tdQngcuah~ th6ngthongtinsailnay.HQkhongbie'tdii'li~useduQcxli Iy vath€ hi~nrasaG, maytinhseclIngcapehohQnhii'ngbaabi€u naG,vi the'vi~cclingcapmQtbue tranhtoancanhv'emohinhho~tdQngcuah~thongg'anguivoi caeeongvi~c cuahQlamQtdi'euhe'tsucc'anthie't. c.Phantichthie'tke'mQth~thongthongtindoihoiphaihi€u bie'tLuongt~n tungchitie't,cav'econgvi~cqUailIy Hinky thu~t.Bay la khoiluQngcongvi~c IOnlieuphinhi'euthaigian.Nhunglamthe'naGd€ nhinduQcloancanhvacac m6ilienh~LIangh~thongnhungkhimuondiVaGchitie'tcuamQtph'an aGd6 thivftne6duthongtin? . - - - . . d.Vi~cth€ hi~nnhii'ngchitie'tcliah~thongmoi,void'ayducacd~ctade-t~o nit5mtinchongl(aisad~lllg,m~cdubaygiac6mQtsovandt5hQchuahi€u hoan loan. e. Ne'uxaydlfngcactai li~umota dungligonngii'cuanguaidung,thi l£;ii khonghii'lld~ngchongl(aithitt ke'v~tIy va I~ptrinh,nhungne'unguoiphan tichquadi sailVaGd~cd tungchucliang,I~idelamchonguaiI~ptrinhmattinh dQcI~pd€ timramQtcachgiaiquye'totnhat.Dod6taili~umod h~thongc'an phaixaydlfngthe'naGchophuhQpd€ nguoidungc6th€ hi€u vakhonggaykh6 khanchonguaiI~}})trinh? Voi cacvand'eLIenvi~ctimra mQtligonngii'chungmohinhh6acach~ th6ngthongtin d€ vi~ctraGd6i giii'anguaisad~ngva nh6mphattri€n, giii'a nhungthanhvientrongnh6mphattri€n duQCdedangla htt succ'anthie't.Hi~n Trang:5 naydaco mQtso'phuongphapd~giaiquye'tva'ndt3nay,trongdo DFD (Data flowdiagram)famQtphuongphapduQcdungkhaph6bie'n. TuynhiendaykhongphaiIa nQidungchinhcualu~nvan,nenlacgiakhong clingca'pdayducackie'nthucvt3mohinhDFD,machiclingdip cackie'nthuc canbancanthie'td~b<:tndQccoth~till hi~ucacphancanl<:timQtcachd~dang mathai. 1.2.Ve sdd6dongdii'li~u Trangphantichthie'tke'h~th6ngchungtacanphainh~nranhilngth~cthe benngoai,khodil li~u,dongdil li~uclingnhucacbie'nd6icuadil li~utrucklac dQngcuacacdongdil li~u.£)~motah~th6ngmQtcachdayduchungtacandua racacdohinhdongiand~motacacd6ituQnglIen. Cacquyuckkyhi~u[3] 1.2.1.Caethlj'ethi hihzngoiLi ThuongdtIQCdungdechiS\Iv~thaynguoibenngoaih~th6ng,co th~cling dip dil li~uchoh~th6nghaynh~ncacdil li~utuh~th6ng.Vi dl;t:khachhang, nhanvien,nhaclingca'p,phongke'loan,khohang... £)~ve il1Qth~cth~bell ngoaichungtadungil1Qthinhvuongvoi2 c<:tnhlIen vabentraiduQcve 2 net. Th~cth~bell ngoaiduQcchi dinhbdi cacky ~ d goclIen bentraicuahinh vuong. D TrangtruonghQpth~cth~benngoaiconhit3udongdil li~ulienquaild~tranh s~chongcheocacdongdil li~u,chungtaco th~ve l~pl<:tih~cth~benngoai nhi'eulan,va nh~nd<:tngchungbangcachve themcacduongcheod gocduoi bellphai.Vid~: KHA.CH HAN~<,~\ ~NHANVIEN c NHANVIENa c aNHA CUNG CAP KHA.CH HANG ffinh1..Cacth~cth~benngoai Trang:6 1.2.2.Dong dilli?u C6 th<3xem nhumQt6ngd§:ntrongd6 dli li~uduQcchuy<3ndi. Dongdli li~u duQcve bai cacmlii ten,httangcuamlii tenchihuangcuadongdii'li~u.Mlii ten hai chien c6 th~duQcdungd<3thay cho 2 mlii ten gi6ng nhau nhungnguQc huang. Di~u chinh Kho Hlnh2:CacdongdCi'li~u. Caethl!eth~,khodCi'li~uvacaexU'ly dellc6 th~Ia ngu6nxua'tphathayla dichde'neuadongdii'li~u.Cacphienbantruacdaydoihaiphaighiphanmata dongdii'li~ubangchii'nhaa phiatIeDnhua hinh2,nhunghi~nnaykhidadinb nghIanQidungtl!di~ndITli~u,thiphanmatelduQcghibangchITIOnchirarang n6daduQcmateltrongtl!di<3ndli li~u.Vi dl!-:ne'uchungnhinvaoBAo-BIEU- BAN-HANGtrongtl!di<3ndii'li~uchungtasetha'ycacthanhphancuan6dttQc li~tkenbusan: -BAo-BIEU-BAN-HANG-HANG-NGAY PHA.N-TICH-PHV0NG-HVONG-BAN-HANG ~ / ~ ? / , PHAN-TICH-HI~U-QUA-BAN-HANG ~ / /, ?;! PHAN-TICH-BAN-HANG-THEO-SAN-PHAM TrongmQtso'truonghQpne'uy nghlacuadongdli li~udaro rangchungtac6 thekhangcanghiphanmafa.TuynhientrongmQts6truonghQpl~ira'tkh6ma tadayduynghlacuadongdii'li~u.B6i vai nhling truonghQpnhuv~ythi my thuQcvaotinhqualJ.,tn;mgcuacacd6itu'QngIDaIDatachothichhQp.Vi dl.l:Ne'u illQtkhachhangc6 th<3gai de'n:ddnd~thang,thanhloan,loi thanphien,cac truyva'nthichungtakhangDenve: Trang:7 c KHACH HANG Kim Ira Philntich Baobiu banhfmg NHA banhfmg -.. QUAN LY c Ddnd~thang Thanhtoan Caecallhoi KHACH HANG Lei thanphiSn Sanph1lmtravS Phiin Io~i gIao dieh Cae callhoi Lei thanphiSn matuyVaGhi~ntr<;lng,ne'uxli'Iy "phanlo<;ligiaodich" la quailtrQngchungta lien dungmQtkhai ni~mchung"giaodich khachhang" d€ chi tfttca cac thong tinmakhachhanggdi Wi vagomchungthanhmQtdongdii'li~uduynhftt. c KHACH HANG Giaodieh Khaehhang Phiin Io~i giao dieh Caecallhoi Lei thanphiSn nhungne'uXll'ly "phan10<;lig aodich" khongquail trQngchungtaco th~bo novachuy~nthongtintr~(ctie'pde'ncacxli'ly tu'ongling. c KHACH HANG Cae callhOi Ghi nh~n thanh loan Sua Ddn d~t hang Xu1;' eae cau h6i 1.2.3.Xu Ii Xli'ly du'qcth€ hi~nb~nghlnhchii'nh~tirongoc,m6ixli'Iy comQtdinhdanh duynhftt.Xli'ly thu'ongduqcchialam3ph'an: r(';~ Trang:8 Dinhdaub M6 tachilcniing Tharnkhaov~tly Phan djnhdanhco th61amQtso, thuongdu<;Jcdanhso ill' trai quaphai trong ma hinh DFD nhungkhangco 9nghlagi hon ngoaivi~cIa chi danhcuaxii'19, bdi vi mQt vai xii'19co th6du<;Jcphanchiathanh2 hay nhieuxii'19va ngu<;Jcl(;1i nhieuxii'19co th~h<;Jpnha't(;1othanhmQtxii'19.Ngo(;1itru truongh<;Jphilochia hayhQpnha't,cacxii'19conl(;1ikhongduQcthayd6i chi danh,bdi vi chungduQc dungd nhieudongdli 1i~uvad cacmucphilora tha'pbon. M6 telcllltcnc1ngnen sii'dl;!ngcall m~nhl~nh,ba:td'aub~ngmQtdQngtu va IDeosan1amQtm~nhde d6i tunhungcangdongiancangt6t.Vi d¥: Nh~p- chi tiel khachhangmojo Ki6m tra- <Tiatri tindun<Tcuakhachhan<T.b . . b b Thamkhdov(lllyph'an aylienquaildengiaido(;1nthietke v~t19,nochobitt xii'19du<;Jcthtfchi~nbdiai,haybQph~nnaophl;!trach. 29 37 Nhap chititt khachhang. moi Tinh giatri thanhphii'm Banhang PM205 BQph~n Ten chuangtrinh MQtxii'19thtfchi~nvi~cki6mtrava co th6chonhieukhanangket qua chungtagQinoIaxalydi~ukhiln. 1.2.4.Klzodilli~'u DuQcdungd~1u'utn1'dli1i~u.Khodli 1i~uduQcveb~nghaiduongth£ngn~m ngangsongsongvadongkinillQtd'au.M6i khodli li~uduQcchidanhbdichITD theosanIamQtso'nguyenmyyd~ttrongillQtkhungbell trai. Trang:9 [§] PHIEU THU CHI Trang tnianghQpd~tranhchongcheocac dongdIT1i~u,chungta co ve kho dli 1i~ul~pl~ivai fanva nh~nd~ngra chungbAngcachthemcacv~chdungben trai. Vi dl;l: ~ KHACH HANG EJ NHAN VIEN EI KHACH HANG Khi tmy xul1tmQtkhodIT1i~umlii tendongdli 1i~udi VaGkhoth~hi~nmQts1! c~pnh~tsli'ad6i thongtin kho dIT1i~u.NguQcl~imlii ten di ra th~hi~nkho dIT 1i~uduQctmy xul1tduoid~ngchichophepdQc. GiiJ liim\i~c NhapgiiJ lam\'iec I D2 [ NGAY CONG ? Cae chi ti€t tinh lu'dng Tfnh lu'dng 1.2.5.QllYzt(jcv~vi?caemucpluittriill M6i mQtxli'19d milccaocoth~phattri~nthanhmQtsodBdongdli li~uclla chinhnod mucthl1phonvamahlnhDFD chitielcuaxli'19nayduQcgQila mQt h?thongcon.M6i xu19dh~thongcondinphaith~hi~nmoiquanh~cuachung voicac muclIen.Dodo cacxli'19d mucthl1pthuangdltQCdanhsolaph'anth~p phancuamuclIenno.Vi dl;l:xu1929duQcphandi thanhcacxli'1929.1,29.2, 29.3vaneuc'ancoth~phanraxuongmucthubanhu29.3.1,29.3.2. Cachth~hi~nr6rangnhl1tlave sodBdongdli li~ud mucthl1pbentrongcac dltongbienbi~udiensodBd muccaobon,r6 rangtl1tcacacdongdli li~uVaG varaxu19d muccaod~uphaidiquaduongbien. Cac khodli li~uchiduQcsli'dl;lngbdixli'19naysenAmbentrang,nguQcl~i nhlingkhodIT1i~uduQcdungchungvoicacxli'19khacchungphaiduQcd~tnAm lIenduongbien. Cacth\1cth~benngoaikhangduQcd~tben trangduangbien,ngayca truong hqpth\1cth~do chiduQcdungduynhl1tbdi xli'19. <!\ TrangtruonghQpdongdli 1i~ugiao vdi dongdli li~ukhachay giao vdi mQt khodli li~u,chungta co th~dungmQtcunglIon d~th~hi~nr6 duongdi cua dongdli li~u. Trang:10 ~ l- I 2.Vi d\1ungd\1ngcuaphuongphapDFD trongphantichthie'tke'h~thO'ng thongtin VI d~nayduQclacgia1a'ytirmQtb~iloanth\lcte',nh~mm~cdichgiupb£:ln dQchieuduQcvi~cxayd\lngm6hlnhDFD duQctie'nhanhrasaG?N6 clingduQc sii'd~ngtrongcacchuangtie'pIDeode minhhQachocacph'an19thuye'trong m6ichuang. Bai toan: MQtc6ngtysanxua'tbanhk~obaag6m1nhamaysanxua'tva 3 chinhanh phanphoisanph~m.T£:linhamaychlnhva m6ichinhanhdellc6khoriengd~ tantn1'hangh6a.C6ngtydangc'anlingd~ngtinhQcVaGvi~cqUail19nh~pkho vabanhangt£:licacchinhanh.Vi~cbanhangdtlQctie'nhanhb~ngcachnhan vientie'pthide'nchaohangva yell c'aukhachhang(c6the1akhachhangCll ho~cmai)ghidond~thang,va hangsedtlQcgiaosamnha't1asailmQtngay. Kbachhangc6th~thanhloanlamnhieu1'anchomQth6adonbanhang. C6ng vi~cquail 19t£:lichi nhanhg6m cac ph'anva thuwc chi tie'tduQcth~lc hi~nnhusail : 2.1.Nh~phangtit tangcongty . Chi nhanhvie'tp.hie'ud~ngJ~ixua'thang. . T6ngc6ngtyvie'tboadonxua'tvachuy~nhangchochinhanh. . Chi nhanhvie'tphie'unh~pkhotheos6 luQngth\lcte'va nh~phangVaG kho. . Ne'us61tlQngnh~pth\lcte'kh6ngdungvaih6adonxua'tcuat6ngc6ngty, thlchinhanhvie'tphie'ub6ithuongchotaixe'vabaavet6ngc6ngty. 2.2.Banhangchokhach . Nhanvientie'pthide'nchaohang. <'~\ . Khachhangvie'tdond~thanggdichochinhanhth6ngquanhanvientie'p thi. . ChinhanhkiemtradnhhQp1~cuadond~thang. rI:)H.~H.TlrNHIEN1 . Ne'udonhangkhangh<JpI~tnllt;liehokhaehhang. . Ne'udonhangh<JpI~thiki~mtrakhoxeme6dli hangd~giaokhang'1 Ne'ukhangdli hangse ghi nh~nIt;licaedond~thangehuadu<Jegiai quye't,dongthaivie'tphie'ud~nghixuftthanggdiehotangeangty. . E>6ivdicaedond~thangdlihanggiaothit~ph<Jpcaedond~thangeung tuye'nduangvaochungmQtxegiaohang. . Vie'tphie'ud~nghixufttkh~ehocaexegiaohang. . Vie'th6adonehocaedond~thangvaxuftthangd~nhanviengiaohang digiaoehokhaehhang. 2.3.Theodoicongmjcuakhachhimg . C~pnh~teangn<Jciiakhaehhang. . Khaehhangthanhloanehonhanvientie'pthi. . Nhanvientie'pth!nQpti~nehobQph~nke'loan. . Ke'loanvie'tphieuthuti~nehokhaehhang. . Ke'loanc~pnh~trangn<Jcuakhaehhang. BaygiGchungtaseI~pmabingDFDd~mahinhh6aloanbQcaexii'19eua cacrangvi~cqlU:ln19tren.Tn1oche'tchungtal~pmahinhtangth~,ddayc6: Hai tl71!cthEherzngocli 1. TONG CONG TY 2. KHAcH HANG . - . Niimxi(ly chinh 1. Nh~phangchochinhanh. 2. Ki~mtradond~thang. 3. Ki~mtrakhovaxuftthang. 4. Thead6icangn<;icuakhaehhang. 5. L~pcaebaaeaonh~pxufttonkhovaeangn<J. Cackhodalifu <'~\ I. Danhm~ckhachhang- luutradanhsaeheuatiltcacaekhachhang. 2. Danhm~csanph§'m- lu'utradanhsaeheuat{teacaesanph§'m. Trang:12 3. Phie'unh~pkhocuachinhanh- hmtrutiltca.cacphie'unh~pkhocuachi nhanh. 4. Phie'uxuiltkhocuachinhanh- lu'utrutiltcad.c phie'uxuiltkhocuachi nhanh. 5. ton khocuachinhanh- hilltrusolu'c;ingtonkhohangh6acuachinhanh. 6. Bdnd~thang- luutrutiltcaddnd~thangmdiva ddnd~thangchogiao l~itru'dcd6cuakhcichang.Tr~ngthai"mdi"hay"chogiaol~i"cuacac ddnd~thangdu'c;iCphanbi~tbdithuQctinhtrgngthai. 7. H6a ddn- luutrutiltcah6addncuakhachhang. 8. Congnc;ikhachhang- lu'utrucacfanthanhloancuatungh6addn,cua khachhang. 9. Phie'uxuiltkhocuatangcongty- lu'utrutiltcaphie'uxuiltkhocuatang congty xuiithangchochinhanh. 10.Phie'uboi thu'ongCitatai xe'- luu tru thongtinboi thu'ongcuataixe'trong tru'onghc;ipxayra milthang. Trang:13 Hinh 3 ..Mo hZllhDFD to?llgquatcuah? thffllg ~ PHrEU NHAp El TONG CONG TY H6a ddnxu;!'!kho Nh~phang cho chi nhanh D5 TON KHO 2 3 E2 KHA.CH HANG hang Ki~mtfa k11ova xuilthang Ki~mtfa dondiit 4 5 Theod6i congnq cua L~pcae baocao nh~pxua't vacongnq El TONG CONG TY kMchhang/4\ Trang:14 D€ hi€u 1'6themsl1ho<;ltdQngcuah~th6ngchungta se phanIff caexii' ly cua mahinh tangquatxu6ngcaemilethapbon.Dftu lien la xii'ly "Nh~phangvao chinhanh"trongxii'ly nay,ngoaivi~cxii'dl;lngcae: Kho dli li~uchung:Philu nhqpkho,t6nkhodu'qcd~tn~mt1'endu'ongbien. Thl1Cth€ bell ngoai: Tangcongtydu'qcd~tbell ngoaidu'ongbien. concohai kho dli li~u:Philu xuatcuat6ngty,philu b6i thuangchidu'<;Jcxii'dl:111g trongxii'ly nay,nenchungdu'<;Jcd~tbentrongdu'ongbiencuaxii'ly. ?amilephan1'anayxii'ly chinhdu'<;Jcchiathanh5 xii'ly d milethaphon: 1. Vie'thoadonxua'tkhot<;litangc6ngty. 2. Ki€m t1'as6hJ'<;Jnghoadonvoi sos61u'<;Jngthl1cte'. 3. Vie'tphie'unh~pkhocuachinhanh. 4. Di-euchinhs61u'<;Jngtonkho. 5. L~pphie'uboitht(ongchotaixe'ne'ubima'thang. Hlnh 4: M{jhillh DFD ciiaxli lj UNhqphll1zgVllOchi llluillh " 1.Nh~phangvaochinhanh 09 I P. XUAT TCT 1.1 1.2 1.3 El TONG CONGTY H6a deiu xui;'!kh-o Vie't hoadon :matkho Ki~mtra s6h1<1ng- sov6i hoadon Vie'tphie'u nh~pkho-&' Nh~phang LL- L~pphi€u b6ithuang cho taix€ 1.5 Bi€u chlnh t6nkho DIol BOI TWaNG 41 Trang: 15 Hinh5:MfJ Illnll DFD ciiaxu ij "Kiim tradUlldijtIlcuzg" 2. Ki~mtraddnd~thang '\ 1E0 KHA.CH I 2.1 2.2 2.3 E2 KRAcH HAN/ ViEt ddnd~t hang Bdn d~thang Ki~m tra khach hang Khach Nh~p hangmdi thOngtin khachhang moi Khach hang cu 2.4 Ki~m tra ten sanpMm 1E2j SANPHAM Ten SP Ten SP sai dung 2.6 2.5 Gdi thOngbao :\d vltdt quidjnh --- -~ ~ -- Thon)l baa Ki~m tra c6ngn<;1 iDS I CONGNQ Bdn d~than~ {~6ID.DATHANG 7 Mile phan ra euaxU'Iy "KitSmITadon d~thang" kh6ng co caekho dii'li~u riengIDasU'dl;mgc.t,c: Khodii'li~uchung:khachhang,Sanphclm,congnr;va dandgthang. Tht;tethtSbenngoai:Khachhang L Trang:16 Ph'anxii'ly dU<;1Cphanrathanh6xii'ly nhohan: 1. Khachhangvie'tdond~thang. 2. Ki€m trakhachhangtrendond~thangdacochua? 3. C~pnh~tcacthongtinv'ekhachhang,ne'ulakhachhangmaio 4. Ki€m tra xemcacten sanphfimghi trendond~thangco dunghay khong?. 5. Ki€m trakhachhangcon<;1vu<;1tquas6ti'enquidinhhaykhong? 6. Gdi thongbaatral~idond~thangchakhach,ne'ukhachhangghisaiten sanphfimha~cs6n<;1davu<;1tquaquydinh. ffinh 6:Mfj hinhDFD cuaxii Ii "Kiim trakIlOvagiaohang" 3.Ki6mtrakhovagiaohang EJJ-Iang TON KHOD6 IB. BAT HANG 3.1 3.4 3.3 Bi€u chinh khova l~pphie'u xua'tkho IBBBM~I ~p Ki6mtra bOadonva tankho giaohang Khong dtl hang xu!;'t HOA DCiN E1 TONG CONG TY ~ '").:>.- Vie't pbjeu d€ n"bjc . xua'tkho Dsl CONGN<} E2 . KRAcH HANG H6a don+hangh6a Xli'19"Ki~mtrakhovagiaohang"duQctie'ntanhbdi4 xli'19nha: 1. Ki~mtras61uQngtankho. 2. Bi-euchinhs61uQngkhoval~pphie'uxuit. 3. L~phoaddn~lientanhgiaohangchokhach. 4. Vie'tphie'ud-enghixuit hanggdiv-etang~6ngty trongtruongs6luQng hangdchinhanhkh6ngddd~giao. . Trang:18 Cac xli'19naykhongdungkhodiI li<$ufieng machungse lac dQngdtn cac: Kho diI li<$uchung:Dond{jthang,phitu xwl't,t8nkho,h6adonva congnq. Tht1cth~bell ngoai:T6ngcongtyvakhachhang. Chungtada phan fa 3 xli'19cuamo hlnh tangquat,tfong2 xii'19con I~ithi xii'19"L~p cacbaacaove nh~pxuatkho va qUail19congnQ" chi Ia vi<$ctang hQpthongke cacthongtind'auvao lien chungtakhongc'anphaiphanfa chi titt them.Rieng mo hinhphan fa cuaxli'19"Theo d6i congnQcuakhachhang" thi duQcchiathanh3 xli'19nho: 1. KhachhangnQplien. 2. Vitt phitu thu. 3. C~pnh~tcongnQciiakhachhang. Cacxli'19naylac dQngdtn: Kho diI li<$uchung:congnqvaPhie'uthu. Tht1cth~ngoai:Khachhang ffinh 7:Mo hillh DFD ciiaxiiii' "Theodoi collgm!ciiakluicll hilllg" 4. Thea d6i congnd cuaKhach halHT '\ 4.1 4.2 E2 'RHAcH ,- HANG / NQp tih - Vie't phie'u thu - ~ PHrEU THU \. Phie'u tllU 4.3 ,1\ qp nh~t congn~ 1DSI CONGNQ "- ./ Trang:19 3.Nhfi'ngh~nche'cua phuongphapDFD va huangkhiic ph\lc Qua caeph'antrlnhbay lIen chungta c6 mQtvai daubgia v'ephuongphap DFD nhusail: Uudiim T~oduc;icmQtcosdthangnhfftchovi~cth~hi~nmQth~thangthongtin, giup chovi~ctraGd6i thongtin giii'aphanrichvien - ngudi sli'dl.;lllg,giii'aphanrich vien - l~ptrlnh vien trd nend~dang,nguai sli'dungc6 th~hlnh dungra Gong vi~ccilahQvacaemoilienh~. B~ngcachsitd~ngcachlnhanhtrl;I'cquailn6giupvi~cth~hi~nmQth~thang thongtinduc;icthl;I'chi~nd~dang,thongdoihoi ngudidungphailieutannhi'eu thaigianchovi~chi~ubie'tn6. Khuye'tdiim Tuyc6 mQtvai quyudcchiphaivi~cke'tnai cacdoi tuc;ingtrongmohlnh, nhungph'anldnd'eumangtinhtrl;I'cquail,thie'ucaccoSdly lu~nch~tche,thong c6mQtquylu~tnaGchiphaisoluc;ingclingnhunQidungcilacacdongdii'li~u VaGvadongdii'li~uracllamQtdaitltc;ing,chingh~ntrongmohlnh"nh~phang VaGchinhanh"d trang15ne'uchungtavethemcacdongdii'li~u1.1-7 D3,1.1 ~ D10va 1.1-7 1.4thldl.tdig6cdQcuphapcacdongdii'li~unayd'euhc;iP1~, nhungv'ephuongdi~nngii'nghiathlcaedongdii'li~unaythongc6thl;I'c. Khi dQcmQtmo hinh DFD chung ta d~ dang hlnh dung dong dii' li~u di chuy~nnhltthe'naG,nhl.tngdo thong c6 nhii'ngquy dinh ch~tche d~di~ngiai chodungcac dongdii'li~ura va nhii'ngquy lu~tchi phai cacmai quailh~giii'a _cacdongdii'li~ll VaGva caedongdii'li~ura clia mQtdaitltc;ing,nenrfftkh6 )Cae dinhcaemoi quail h~ton t~itrongh~thongd~tie'nhanh ki~mtra tronggiai do~ndi d~t.Vi d~:daivdixli'ly 2.2trongmohlnh"Ki~mtradond~thang"a trang16chungtathongth~xacdinhduc;icmaiquailh~giii'ahaidongdii'li~u VaG2.1-72.2,D1-7 2.2vahaidongdii'li~ura2.2-7 2.3,2.2-7 2.4lagl? Vi thongxacdinhduc;iCcacmaiquailh~trongmohlnh,nenthongth~thl;I'C hi~nvi~cki~mtrad~xacdinhtinhdungdilncliamohlnh.Dod6c6th~dftntdi caesail'amkhidltah~thangVaGtri~nthai apdl;lllg. Kh6khankhi xemxetsl;I'ho(;ltdQngva tr(;lngthaihi~nt~icllah~thangkhi c'anthie't,chingh~n1hixemsl;I'ho~tdQngcliah~thong"Quanly banhang",thi m6ingudisehinhdungsl;tho~tdQngcliah~thongrheacachriengcliaminh, chlithongc6mQtcachthuc,mQtphuongphapth~hi~nchung,mamQinguaikhi Trang:20 nhinvaod6d~uhi€u duQcsl1ho~tdQngva tr~ngthaicuah~thongdffdil3nra nhuthe'nao. Hudngkhiicph¥c TImkie'mmQtmahinhc6casdIy thuye'tch~tche,c6th€ xaydl1ngh~thong chuangtrinhd€ till kie'mcacmoiquailh~tant~itrongh~thong,LIencasdcac quailh~till duQcke'thQpvdicact~pdli li~umftuthl1Cte'd€ ki€m ITamahinh, ngoaira thl1chi~nvi~cgiii I~psl1ho~tdQngcuamahinhd€ xemxetsl1ho~t dQngcuacacdoituQngtrongmahinh. Vdi huanggiiii quye'tnhuuoen,cangvi~ctie'ptheola xaydl1ngcaclu~tdftn xufitd€ chuy€ncacquyudcky hi~ucuamahinhDFD sangmahinhmdi,thl1c hi~ntill kie'mcacmoiquailh~tant~itrongmahinhmdi,tird6phananhnguQc I~icacmoiquailh~leumahinhDFD,dangthaidl1avaochungd€ ki€m trama hinhDFD. . Trencosdyellc'aud~tranhuthe',m~ngPeuoiduQcxaydl1ngLIencosdloan hQcch~tche,clingvdi cacthai ni~m(cac khainifmnaysl!du(jcgidi thichJ chuangsau):place,transitionrfitgiongcacdoi tuQng:thl1cth€ ngoai,tho dli li~u,xli'Iy cuamahinhDFD.Hanthe'nliacacthai ni~m:bittbitn,kh6nggian trqmgthaiduQcth€ hi~ndudid~ngcaccangthlicloanhQCseIa caccangc~giup chungtatill kie'mcacmoiquailh~vath€ hi~ntr~ngthaicuah~thong.Nhuv~y m~ngPetriIa mahinhtotnha'tgiupchungtagiaiquye'tcacva'nd~kh6khan trongmahinhDFD. Trudckhi ling d~ngm~ngPetrid€ giaiquye'tcacva'nd~lieULIen,chungta c'andivaochuang2 d€ till hi€u m~ngPetrimQtcachr6rangbon. 4\ L Trang:21