下面是机构管理部分数据库的建立create table users( username varchar(8) primary key, passwd varchar(15) not null, permit integer not null, org varchar(30) not null);create table county( county_name varchar(10) primary key, init char(2);create table hospital( code char(4) primary key, hos_name varchar(20) not NULL, county varchar(10) not null, foreign key(county) references county(county_name);create table community( code char(4) primary key, hos_n