createnation.sql

数据库的加密以及密态查询

create table nation(
N_NATIONKEY	int not null primary key check(N_NATIONKEY >= 0), 
N_NAME		char(25) not null,
N_REGIONKEY	int not null check (N_REGIONKEY >= 0),
N_COMMENT	varchar(152) not null,
foreign key(N_REGIONKEY) references REGION(R_REGIONKEY)
)