BI 3 QUN L QU TNH DNG

BI 3 QUN L QU TNH DNGPhn 1: Thit k c s d liu1. M t h thng

Mt qu tn dng cn t chc mt c s d liu qun l hot ng cho vay vn i vi khch hng. Cho bit cc thng tin sau v cc tp thc th: KHACHHANG: thng tin v khch hng bao gm: MAKH(M khch hng: thuc tnh kho) tENKH (tn khch hng), DIACHIKH (a ch lin h). HINHTHUCVAY: quan ly cc hnh thc vay vn c cc thuc tnh: MAHT( m s vay vn) Tgtoida( thi giang vay vn ti a (tnh theo thng)), LAISUAT( li sut hng thng) TENHT( Cc hnh thc vay vn) HOSOvay: h s vay vn c cc thuc tnh: MAHS( m h s), SOTIENVAY( s ting vay) NGAYVAY( ngy bt u vay) PHIEUTT: phiu thanh ton cho cc h s, c cc thuc tnh: MAPHIEU (m s phiu NGAYTT( ngy thanh ton) SOTIEN ( s tin vn) tienLAI( s tin li phi tra ) Ngoi ra h thng ny cn h tr vic qun l cc mi quan h THUOC, LAPHS v LAPPHIEU vi ng ngha nh sau:Bit rng:

Mt khch hng c th chn mt hnh hay nhiu hnh thc vay vn, mi hnh thc vay vn c th thuc nhiu khch hng hoc khng thuc khch hng no.

Mt khch hng c th c mt h s vay vn hoc c nhiu h so vay vn, mt h s vay vn ch thuc mt khch hng hoc khng thuc khch hng no.

Mt khch hng c th khng c mt phiu thanh ton hoc v th c nhiu phiu thanh ton, mt phiu thanh ton ch c th ca mt khch hng. 2. Thit k c s d liu xut pht t m hnh E-R

2.1. Xy dng m hnh E-R

``M hnh ny bao gm:

Cc tp thc th: c m t chi tit trong bng sau

Tn tp thc thGii thchThuc tnh

TnGii thch

KHACHHANGTp tt c cc thng tin v khch hngMAKHM khch hng

TENKHTn khch hng

DIACHIKHa ch

HOSOH s vay vn

MAHSM h s

SOTIENVAYS tin vay

NGAYVAYNgy bt u vay

hinhthucvayQun l cc hnh thc vayMAHTM hnh thc

TENHTTn hnh thc

TGTOIDAThi gian ti a

LAISUATLi sut

PHIEUTTPhiu thanh tonMAPHIEUm s phiu thanh ton

NGAYTTngy thanh ton

SOTIENs tin vn

tienLAIs tin li

Cc mi quan hSTTTN MI QUAN HGII THCH

1THUOC(hs,h)(Thuoc ( h s hs thuc hnh thc vay h

2LAPHS(k,hs)(LapHS ( khch hng k lp h s hs

3LAPPHIEU(hs,p)(LapPhieu ( h s hs lp phiu thanh ton p

2.2 Xy dng m hnh quan h

Phn 2: Thit k c s d liu thi giang3. Chuyn i m hnh ER sang m hnh Time- ER4. Chuyn i m hnh Time- ER sang m hnh quan h:

5. Chuyn i m hnh ER sang m hnh hng tng:CHUYN I M HNH ER SANG M HNH HNG I TNGKhachHang (MAKH, TENKH, DIACHIKH)

HoSoVAY ( MaHS, Sotienvay, NGAYVAY, MaKH)

PhieuTT( Maphieu, NgayTT, Sotien, Tienlai, MaHS)

HinhThucVay( MaHT, TenHT, TGtoida, Laisuat, MaHS)

Class KhachHang

Properties

MaKH: string;

TenKH: string;

DIACHIKH: string;

Operations

.

End KhachHang;

Class HoSoVAY

Properties

MaHS: string;

Sotienvay: float;

NGAYvay: date;

LapHS: KhachHang;

Operations

.

End HoSoVAY;

Class PhieuTT

Properties

MaPhieu: string;

NgayTT: date;

Sotien

: float;

Lienlai: float;

LapPhieu: HoSo;

Operations

.

End PhieuTT;

Class HinhThucVay

Properties

MaHT: string;

TenHT: string;

TGtoida: interger;

Laisuat: float;

Thuoc

: HoSo;

Operations

.

End HinhThucVay;

THUOC

(1,1)

(1,n)

DIACHIKH

TENKH

MAKH

(1,1)

TENHT

LAPPHIEU

MAHT

(1,n)

KHACHHANG

TENHT

LAISUAT

MAHT

MAHS

(1,1)

THUOC

HOSOVAY

NGAYVAY

SOTIENVAY

LAISUAT

PHIEUTT

MAPHIEU

NGAYTT

SOTIEN

TIENLAI

HINHTHUCVAY

(0,n)

LAPHS

(1,n)

TGTOIDA

TGTOIDA

HINHTHUCVAY

HOSOVAY

MAHS

NGAYVAY

SOTIENVAY

LAPHS

MAKH

TENKH

(1,1)

(1,n)

LAPPHIEU

TIENLAI

SOTIEN

NGAYTT

MAPHIEU

PHIEUTT

(1,1)

(1,1)

KHACHHANG TT

DIACHIKH

VT

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