綜合案例
ddl&dml
有一個商品數據庫
1.數據表的創建?? ?ddl

先編寫數據庫腳本
--刪除數據表
drop table purcase purge;
drop table product purge;
drop table customer purge;
--創建數據表
create table product(
?? ?product_id varchar2(5),
?? ?product_name varchar2(30) not null,
?? ?unit_price number,
?? ?category varchar2(50),
?? ?provider varchar2(50),
?? ?constraint pk_product_id primary key(product_id),
?? ?constraint ck_unit_price check(unit_price>0)
);
create table customer(
?? ?customer_id varchar2(5),
?? ?customer_name varchar2(30) not null,
?? ?location varchar2(50),
?? ?constraint pk_customer_id primary key(customer_id)
);
create table purcase(
?? ?customer_id varchar2(5),
?? ?product_id varchar2(5),
?? ?quantity number,
?? ?constraint fk_customer_id foreign key(customer_id) references customer(customer_id) on delete cascade,
?? ?constraint fk_product_id foreign key(product_id) references product(product_id) on delete cascade,
?? ?constraint ck_quantity check(quantity)
);

--增加測試數據
--增加產品信息
insert into product(product_id,product_name,unit_price,category,provider)
values('M01','jjs',8.00,'yg','bj');
insert into product(product_id,product_name,unit_price,category,provider)
values('M02','glj',6.50,'yg','glj');
insert into product(product_id,product_name,unit_price,category,provider)
values('M03','jl',5.00,'yg','lhlh');
insert into product(product_id,product_name,unit_price,category,provider)
values('M04','sfj',3.00,'xz','bj');
insert into product(product_id,product_name,unit_price,category,provider)
values('M05','xsl',5.00,'xz','lhlh');
insert into product(product_id,product_name,unit_price,category,provider)
values('M06','dp',2.50,'xyf','nas');
insert into product(product_id,product_name,unit_price,category,provider)
values('M07','zh',3.50,'yg','lhlh');
insert into product(product_id,product_name,unit_price,category,provider)
values('M08','tz',3.00,'xyf','bj');
insert into product(product_id,product_name,unit_price,category,provider)
values('M09','bl',4.00,'xyf','bj');
--增加客戶信息
insert into customer(customer_id,customer_name,location)
values('C01','Dennis','hd');
insert into customer(customer_id,customer_name,location)
values('C02','John','cy');
insert into customer(customer_id,customer_name,location)
values('C03','Tom','dc');
insert into customer(customer_id,customer_name,location)
values('C04','Jenny','dc');
insert into customer(customer_id,customer_name,location)
values('C05','Rick','xc');
--增加購買記錄
insert into purcase(customer_id,product_id,quantity)
values('C01','M01',3);
insert into purcase(customer_id,product_id,quantity)
values('C01','M05',2);
insert into purcase(customer_id,product_id,quantity)
values('C01','M08',2);
insert into purcase(customer_id,product_id,quantity)
values('C02','M02',5);
insert into purcase(customer_id,product_id,quantity)
values('C02','M06',4);
insert into purcase(customer_id,product_id,quantity)
values('C03','M01',1);
insert into purcase(customer_id,product_id,quantity)
values('C03','M05',1);
insert into purcase(customer_id,product_id,quantity)
values('C03','M06',3);
insert into purcase(customer_id,product_id,quantity)
values('C03','M08',1);
insert into purcase(customer_id,product_id,quantity)
values('C04','M03',7);
insert into purcase(customer_id,product_id,quantity)
values('C04','M04',3);
insert into purcase(customer_id,product_id,quantity)
values('C05','M06',2);
insert into purcase(customer_id,product_id,quantity)
values('C05','M07',8);
commit;

轉載于:https://www.cnblogs.com/createyuan/p/6209192.html

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