connected to oracle database 11g enterprise edition release 11.2.0.1.0
connected as haha@orcl
sql> show user;
user is haha
sql> connt haha/123456;
connt haha/123456
ora-00900: 無效 sql 語句
sql> connt user haha/123456;
connt user haha/123456
ora-00900: 無效 sql 語句
sql> conn user haha/123456;
sql>
sql> conn user haha/123456;
sql> create user zz identified by 123456;
create user zz identified by 123456
ora-01031: 許可權不足
sql> conn system/123456;
connected to oracle database 11g enterprise edition release 11.2.0.1.0
connected as system
sql> create user zz identified by 123456;
user created
sql> conn zz/123456;
sql> show user;
user is "system"
sql> conn zz/123456;
sql>--為新建立的使用者加連線許可權和資源許可權
sql> grant connect,resource to zz;
grant connect,resouret to zz
ora-01919: 角色 'resouret' 不存在
sql> grant connect,resourece to zz;
grant connect,resourece to zz
ora-01919: 角色 'resourece' 不存在
sql> grant connect,resource to zz;
grant succeeded
sql> conn zz/123456;
connected to oracle database 11g enterprise edition release 11.2.0.1.0
connected as zz
sql> ed
sql>
sql> create table db
2 (
3 id number primary key,
4 d_name varchar(20)
5 )
6 /
table created
sql> insert into db values(10,'hhhh');
1 row inserted
sql> commit;
commit complete
sql> select *from db;
id d_name
---------- --------------------
10 hhhh
sql> select *from db;
id d_name
---------- --------------------
10 hhhh
sql> select *from db;
id d_name
---------- --------------------
10 hhhh
sql> select *from db;
id d_name
---------- --------------------
11 hahhaa
10 hhhh
sql> select *from db;
id d_name
---------- --------------------
11 hahhaa
10 hhhh
12 vvvvvvvvv
sql> select *from db;
id d_name
---------- --------------------
10 hhhh
12 vvvvvvvvv
sql> select *from db;
id d_name
---------- --------------------
10 我愛你
12 vvvvvvvvv
sql>
//解鎖
alter user scott account unlock;
//對資料庫的表進行外來鍵約束
sql> create table userinfo
2 (
3 id integer primary key,
4 u_name varchar(20)
5 )
6 /
table created
sql> create table u_class
2 (
3 id integer primary key,
4 content varchar(50),
5 u_id integer
6 )
7 /
table created
sql> insert into userinfo values(1,'aaa');
1 row inserted
sql> insert into u_class values(2,'zzz',1);
1 row inserted
sql>--新增外來鍵約束;
sql> alter table u_class add foreign key (u_id) references userinfo(id);
table altered
sql> delete from userinfo where id=1;
delete from userinfo where id=1
ora-02292: 違反完整約束條件 (sa.sys_c0011126) - 已找到子記錄
sql> delete from u_class where id=2;
1 row deleted
sql> delete from userinfo where id=1;
1 row deleted
sql> --檢視oracle中的所有的使用者；
sql> select *from dba_users;
username
------------------------------
mgmt_view
syssystem
dbsnmp
sysman
stuscott
saoutln
flows_files
mdsys
ordsys
exfsys
wmsys
apex_030200
owbsys_audit
orddata
ctxsys
anonymous
username
------------------------------
xdbordplugins
owbsys
si_informtn_schema
olapsys
oracle_ocm
xs$null
bipm
mddata
ixsh
dipoe
apex_public_user
hrspatial_csw_admin_usr
spatial_wfs_admin_usr
38 rows selected
sql> --檢視當前使用者下的所有表;
sql> select *from user_tables;
table_name
------------------------------
seller
commodity
orderitem
customer
orderform
sql>
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