 想走一走精面既同學就用啦。
每次copy,唔該copy到隔行。因為一次過copy晒,
之後paste落Command度先按Enter,
個程式只係行最後果一句,咁就做唔到架啦。
第四條未打住,遲d先打。(岩岩打左,已經post左係最尾啦)
轉左紫色果d係你建立個database既資料夾個位置,可以唔一樣,大家應該知架啦。
第二題轉左橙色果兩個primary key,可以淨係打第一個,因為打兩個,佢都係set Stud_ID做primary key。
第四條最後果一 個table,果兩個primary key都係可以淨係打第一個。
第四條create最後一個table既時候,
佢會問你係唔係overwite d野,我係揀左no既。
轉左做紅色果d字,係因為個程式話Field Name太長。
所以我將佢地縮短左,多數都係要頭果幾個字。
所以走精面既人最好睇下書,唔好個個都縮短到一樣。
橙色底果幾句 ,阿sir上堂係未教or無教既,係我自己搵既。最好就唔好抄啦。
最後一條果d default 0我唔知係點解,知點解既唔該話俾我知。 有咩唔得既,就話我知啦。
Ch_9 第二條
set default to D:\VFP\other\02
create database EX09_PROJ
create table STUDENT;
(Stud_ID char(6) primary key,;
Stud_Name char(30) not null,;
Date_Birth date,;
Address memo)
create table PROJECT;
(Proj_ID integer primary key,;
Proj_Name char(30) unique,;
Cost float)
create table ASSIGNMENT;
(Stud_ID char(6) primary key,;
Proj_ID integer primary key)
modify database
Ch_9 第三條
set default to D:\VFP\other\03
create database EX09_POST
modify database
create table STUDENT;
(Stud_ID char(3),;
Stud_Name char(12),;
Address char(30),;
Date_Birth date)
insert into STUDENT values('103', 'Peter Wong', '137 Sunny Street, Kln', {2-18-1993})
insert into STUDENT values('104', 'Maria Chan', '874 Windy Street, Kln', {5-28-1994})
insert into STUDENT values('105', 'Johnny Lam', '863 Rainy Street, Kln', {1-9-1993})
create table POST;
(Post_Name char(15),;
Stud_ID char(3))
insert into POST values('Prefect', '103')
insert into POST values('Monitor', '103')
insert into POST values('Group Leader', '105')
Ch_9 第四條
set default to D:\VFP\other\04
create database EX09_ORDER
modify database
create table CUSTOMER;
(Custo_ID integer primary key,;
Name char(30) not null,;
Address char(50),;
Phone char(10),;
Description memo)
create table PRODUCT;
(Prod_ID integer primary key,;
Prod_Name char(30) unique,;
Price numeric(8,2) default 0,;
Description memo)
create table INVOICE;
(Invoice_No integer primary key,;
Custo_ID integer,;
Invoice_Date date,;
foreign key Custo_ID tag Custo_ID references CUSTOMER)
create table INVOICE_LINE;
(Invoice_No integer primary key,;
Prod_ID integer primary key,;
Quantity integer default 0,;
foreign key Invoice_No tag Invoice_No references INVOICE,;
foreign key Prod_ID tag Prod_ID references PRODUCT)  |