1 --建表
 2 --管理人员表 admin
 3 create table admin(
 4        admin_id      varchar2(3) not null,
 5        admin_loginname           varchar2(8) not null,
 6        admin_password            varchar2(6) not null,
 7        admin_username            varchar2(4) not null,
 8        constraint pk_admin primary key(admin_id)
 9 );
10 comment on column admin.admin_id is ‘管理员编号‘;
11 comment on column admin.admin_loginname is ‘管理员登录用户名‘;
12 comment on column admin.admin_password is ‘管理员登录密码‘;
13 comment on column admin.admin_username is ‘管理员姓名‘;
14 --用户基本信息表  user
15 create table users(
16        user_id    varchar2(10) not null,
17        user_loginname           varchar2(8) not null,
18        user_password            varchar2(6) not null,
19        user_username            varchar2(4) not null,
20        user_address             varchar2(20) not null,
21        user_phone               number(11) not null,
22        constraint pk_users primary key(user_id)
23 );
24 comment on column users.user_id is ‘用户编号‘;
25 comment on column users.user_loginname is ‘用户登录名‘;
26 comment on column users.user_password is ‘用户登录密码‘;
27 comment on column users.user_username is ‘用户姓名‘;
28 comment on column users.user_address is ‘用户地址‘;
29 comment on column users.user_phone is ‘用户电话‘;
30 --水表 water
31 create table water(
32        water_id   varchar2(10) not null,
33        userid     varchar2(10) not null,
34        water_count             number(3,2) not null,
35        water_time              date not null,
36        water_status            number(1) not null,
37        water_priceid           varchar2(10) not null,
38        water_beforecount       number(3,2) not null,
39        constraint pk_water primary key(water_id)       
40 );
41 comment on column water.water_id is ‘水表编号‘;
42 comment on column water.userid is ‘用户编号‘;
43 comment on column water.water_count is ‘水表跑数‘;
44 comment on column water.water_time is ‘水表时间‘;
45 comment on column water.water_status is ‘水费缴费状态‘;
46 comment on column water.water_priceid is ‘水费价格编号‘;
47 comment on column water.water_beforecount is ‘上月水表跑数‘;
48 --水表 power
49 create table power(
50        power_id   varchar2(10) not null,
51        userid     varchar2(10) not null,
52        power_count             number(3,2) not null,
53        power_time              date not null,
54        power_status            number(1) not null,
55        power_priceid           varchar2(10) not null,
56        power_beforecount       number(3,2) not null,
57        constraint pk_power primary key(power_id)       
58 );
59 comment on column power.power_id is ‘电表编号‘;
60 comment on column water.userid is ‘用户编号‘;
61 comment on column power.power_count is ‘电表跑数‘;
62 comment on column power.power_time is ‘电表时间‘;
63 comment on column power.power_status is ‘电费缴费状态‘;
64 comment on column power.power_priceid is ‘电费价格编号‘;
65 comment on column power.power_beforecount is ‘上月电表跑数‘;
66 --价格表 money
67 create table price(
68        price_id   varchar2(10) not null,
69        price_time date not null,
70        isactive   number(1) not null,
71        waterprice number(2,2) not null,
72        powerprice number(2,2) not null, 
73        constraint pk_price primary key(price_id)  
74 );
75 comment on column price.price_id is ‘价格编号‘;
76 comment on column price.price_time is ‘价格日期‘;
77 comment on column price.isactive is ‘价格状态‘;
78 comment on column price.waterprice is ‘水费价格‘;
79 comment on column price.powerprice is ‘电费价格‘;