create database household_Exam use household_Exam create table userTable( userid varchar(50) primary key, userpass varchar(50), username nvarchar(50), householdType char(5) , createdate datetime ) create table categoryTable( idx bigint primary key identity(1,1), type char(1), categoryname nvarchar(50), state char(1), householdtype char(5) ) create table householdTable( idx bigint primary key identity(1,1), householdtype char(5), categorytype bigint, householddate datetime, type char(1), content nvarchar(200), money decimal(20,0), other nvarchar(200), createdate datetime, creater varchar(50), state char(1) )