实验一、熟悉ORALCE环境并练习SQL操作
一、目的与要求
本实验主要是熟悉ORACLE的运行环境，在CLIENT端进行联接设置与服务器联通，进入ORACLE的SQL*PLUS或SQL Developer的操作环境，进一步建立表格，并考虑主键、外键及值约束，进行相应的测试与查询等操作。
二、操作环境
硬件：主频2GHz以上服务器（内存2GB以上、硬件空闲2.2GB以上），主频1GHz以上微机，内存1GB以上。
软件：WINDOWS XP/2000/2003/或Win7/Win8/Win10等。如操作系统是 SERVER版， 可安装ORACLE/9i/10g/11g/12C FOR NT/WINDOWS(注意有32位与64位的区别，可选企业版)； 如果Windows非server如XP/win7等，安装时请选择个人版(PERSONAL)，注意安装时要有兼容性设置与用管理员运行。安装过程中需要关注系统预定义的账号SYS与SYSTEM的密码设置。
三、实验内容
1.上机步骤
在实验室上机时,一般安装时管理员已设置好.先找到windows中的oracle服务（一般为OracleServiceORCL，如下图1）,启动此服务,再找到sql*plus所在的位置（一般桌面上有如下图2的程序组有）,运行即可进行登录界面.
图1 Oracle在计算机系统中的服务
图2称SQL*Plus在系统程序组中的位置
实验室现有环境操作步骤：
通过桌面我的电脑找到管理服务的入口，如图3，或者通过资源管理器找到管理。
图3 通过桌面我的电脑找到管理服务的入口
然后找到服务，如图4。
图4 系统中的服务
再找启动oracle的服务如图1。
（1） 从桌面或在程序中（图2）执行SQL*PLUS
（2） 输入：system/manager(密码可能有变化)
（3） 在SQL>状态下输入建立用户命令:
create user username identified by password;
其中username与password不要数字开头，用户名username中按规则加学号后3位作后缀。如：U_J101表示尾数为J101号的用户。
（4） 给用户授权：
grant resource,connect to username;
(5) 连接用户：
connect username/password
在SQL>状态下，就可以执行建表等操作了。
2.根据要求建立如下表
定义基本表格major_????（专业）与stud_???(学生），关系模式如下(类型长度自定义)：
major_???(MajorNo专业编号 Primary key, MNAME 专业名称,loc 地址 in(主校区，南校区，新校区，铁道校区，湘雅校区),mdean 专业负责人)）
stud_???(SNO primary key, SNAME, SEX (男，女，其他),TEL ,E-MAIL (基本格式判断), birthday >=’19990731’ ,MNO 班长学号 FK，MajorNo 专业编号 FK )
其中学号的第3，4位为MajorNo（专业编号）。
注意表的命名规则。
3.插入样本数据
插入3个专业，如计算机科学与技术，物联网工程，数据科学与大数据技术，每个专业不少于10个人，其中包括自己的信息。
测试相关的完整性约束，并注意保留出错的提示，分析出错的原因。
4．为每个学生建立相关用户，实现权限控制，每个学生可查询自己的信息，班长可查询本班所有学生信息； 为每个专业负责人建立用户，每个专业负责人可查询本专业所有学生信息。
1.建立用户u_j524,密码为p123456,并完成相关操作
drop user u_j524 cascade; create user u_j524 identified by p123456; grant resource,connect,dba to u_j524; conn u_j524/p123456
t_major_j432(
MNO专业编号 Primary key,
MNAME 专业名称,
loc 地址 in(主校区，南校区，新校区，铁道校区，湘雅校区),
mdean 专业负责人)）
t_stud_j432(SNO primary key,
SNAME,
SEX (男，女，其它，其他),
TEL ,E-MAIL (基本格式判断),
birthday >=’19990731’ ,
MNO 班长学号 fk，
MajorNo 专业编号 fk ),
其中MajorNo 专业编号为学号的第3，4位。
create table t_major_j524( mno varchar2(2), mname varchar2(32), loc varchar2(32), mdean varchar2(32), constraint pk_major_mno primary key(mno), constraint ck_major_mname check(loc in('主校区','南校区','新校区','铁道校区','湘雅校区'))); create table t_stud_j524( sno varchar2(10), sname varchar2(32), sex varchar2(32), tel varchar2(32), email varchar2(32), birthday date, mno varchar2(10), majorno varchar2(2), constraint pk_stud_sno primary key(sno), constraint ck_stud_sex check(sex in('男','女','其它')), constraint ck_stud_email check(email like '%@%.%'), constraint ck_stud_birthday check(birthday>to_date('19990731','yyyymmdd'))， constraint ck_stud_majorno check(majorno in substr(sno,3,2)), constraint fk_stud_mno foreign key(mno) references t_stud_j524(sno), constraint fk_stud_majorno foreign key(majorno) references t_major_j524(mno));
插入3个专业的6个班级，如：计算机科学与技术，物联网工程，数据科学与大数据技术，每个专业不小于10个人。
------插入实验数据：3个专业6个班共计36人--------- delete from t_stud_j524; delete from t_major_j524; insert into t_major_j524 values('21','数据科学与大数据技术','主校区','张三'); insert into t_major_j524 values('02','计算机科学与技术','主校区','许宁'); insert into t_major_j524 values('19','物联网工程','主校区','李四'); --数据科学与大数据技术13名同学 insert into t_stud_j524 values('0921170114','李一','男','15390451131','[email protected]',to_date('20000122','yyyymmdd'),'0921170114','21'); insert into t_stud_j524 values('0921170115','李二','男','18726450331','[email protected]',to_date('20001010','yyyymmdd'),'0921170114','21'); insert into t_stud_j524 values('0921170117','李三','男','13260450831','[email protected]',to_date('20001220','yyyymmdd'),'0921170114','21'); insert into t_stud_j524 values('0921170120','李四','男','18655450232','[email protected]',to_date('20000525','yyyymmdd'),'0921170114','21'); insert into t_stud_j524 values('0921170122','李五','女','15342450031','[email protected]',to_date('20000214','yyyymmdd'),'0921170114','21'); insert into t_stud_j524 values('0921170123','李六','女','18790332061','[email protected]',to_date('20000323','yyyymmdd'),'0921170114','21'); insert into t_stud_j524 values('0921170124','李七','男','13250450031','[email protected]',to_date('20000930','yyyymmdd'),'0921170114','21'); insert into t_stud_j524 values('0921170207','张一','男','18790450032','[email protected]',to_date('20001130','yyyymmdd'),'0921170207','21'); insert into t_stud_j524 values('0921170225','张二','女','15256350531','[email protected]',to_date('20000722','yyyymmdd'),'0921170207','21'); insert into t_stud_j524 values('0921170226','张三','男','18796650031','[email protected]',to_date('20001023','yyyymmdd'),'0921170207','21'); insert into t_stud_j524 values('0921170227','张四','女','18390455631','[email protected]',to_date('20000504','yyyymmdd'),'0921170207','21'); insert into t_stud_j524 values('0921170209','张五','男','18790460031','[email protected]',to_date('20010130','yyyymmdd'),'0921170207','21'); insert into t_stud_j524 values('0921170228','张六','女','18592450551','[email protected]',to_date('20000101','yyyymmdd'),'0921170207','21'); --计算机科学与技术12名同学 insert into t_stud_j524 values('0902170516','王二','男','18790450032','[email protected]',to_date('20001130','yyyymmdd'),'0902170516','02'); insert into t_stud_j524 values('0902170520','王三','男','18790460031','[email protected]',to_date('20010130','yyyymmdd'),'0902170516','02'); insert into t_stud_j524 values('0902170521','王四','男','15390451131','[email protected]',to_date('20000122','yyyymmdd'),'0902170516','02'); insert into t_stud_j524 values('0902170523','杜豪','男','18726450331','[email protected]',to_date('20001010','yyyymmdd'),'0902170516','02'); insert into t_stud_j524 values('0902170524','宋海磊','男','13278882876','[email protected]',to_date('20001220','yyyymmdd'),'0902170516','02'); insert into t_stud_j524 values('0902170525','翟树杰','男','13278886638','[email protected]',to_date('20000525','yyyymmdd'),'0902170516','02'); insert into t_stud_j524 values('0902170526','胡旭东','男','15342450031','[email protected]',to_date('20000214','yyyymmdd'),'0902170516','02'); insert into t_stud_j524 values('0902170601','嬴政','男','18790332061','[email protected]',to_date('20000323','yyyymmdd'),'0902170601','02'); insert into t_stud_j524 values('0902170602','刘邦','男','13250450031','[email protected]',to_date('20000930','yyyymmdd'),'0902170601','02'); insert into t_stud_j524 values('0902170604','李广','男','15256350531','[email protected]',to_date('20000722','yyyymmdd'),'0902170601','02'); insert into t_stud_j524 values('0902170605','李世民','女','18796650031','[email protected]',to_date('20001023','yyyymmdd'),'0902170601','02'); insert into t_stud_j524 values('0902170625','赵匡胤','女','18796650031','[email protected]',to_date('20001023','yyyymmdd'),'0902170601','02'); --物联网工程11名同学 insert into t_stud_j524 values('0919170112','周一','女','18790450032','[email protected]',to_date('20001130','yyyymmdd'),'0919170112','19'); insert into t_stud_j524 values('0919170120','周二','男','18790460031','[email protected]',to_date('20010130','yyyymmdd'),'0919170112','19'); insert into t_stud_j524 values('0919170107','周三','男','15390451131','[email protected]',to_date('20000122','yyyymmdd'),'0919170112','19'); insert into t_stud_j524 values('0919170109','周四','男','18726450331','[email protected]',to_date('20001010','yyyymmdd'),'0919170112','19'); insert into t_stud_j524 values('0919170110','周五','男','13260450831','[email protected]',to_date('20001220','yyyymmdd'),'0919170112','19'); insert into t_stud_j524 values('0919170115','周六','女','18655450232','[email protected]',to_date('20000525','yyyymmdd'),'0919170112','19'); insert into t_stud_j524 values('0919170214','陈一','男','15342450031','[email protected]',to_date('20000214','yyyymmdd'),'0919170214','19'); insert into t_stud_j524 values('0919170215','陈二','女','18790332061','[email protected]',to_date('20000323','yyyymmdd'),'0919170214','19'); insert into t_stud_j524 values('0919170217','陈三','女','13250450031','[email protected]',to_date('20000930','yyyymmdd'),'0919170214','19'); insert into t_stud_j524 values('0919170220','陈四','女','15256350531','[email protected]',to_date('20000722','yyyymmdd'),'0919170214','19'); insert into t_stud_j524 values('0919170225','陈五','男','18796650031','[email protected]',to_date('20001023','yyyymmdd'),'0919170214','19');
4.测试相关的完整性约束，并注意保留出错的提示，分析出错的原因 (建议把4放在3前面)
-----测试约束 ---------t_major_j524约束 column mno format a3; column mname format a32; column loc format a10; column mdean format a12; column sno format a11; column sname format a7; column sex format a4; column tel format a12; column email format a32; column birthday format a11; column mno format a11; column majorno format a3; set linesize 150; set pagesize 100; --1.主键不为空 insert into t_major_j524(mno) values(''); --2.主键不能重复 insert into t_major_j524(mno) values('34'); insert into t_major_j524(mno) values('34'); delete from t_major_j524; --3.约束：loc in('主校区','南校区','新校区','铁道校区','湘雅校区') insert into t_major_j524(loc) values('北校区'); --4.成功插入几条完整数据 insert into t_major_j524 values('34','计算机科学与技术','主校区','许宁'); insert into t_major_j524 values('35','大数据','主校区','许宁'); select * from t_major_j524; --t_stud_j524约束 --1.主键不为空 insert into t_stud_j524(sno) values(''); --2.主键不能重复 insert into t_stud_j524(sno) values('1234567890'); insert into t_stud_j524(sno) values('1234567890'); delete from t_stud_j524; --3.约束：sex in('男','女','其它') insert into t_stud_j524(sno,sex) values('1234567890','不知道'); --4.约束：email like '%@%.%' insert into t_stud_j524(sno,email) values('1234567890','123456@789'); --5.约束：birthday>to_date('19990731','yyyymmdd') insert into t_stud_j524(sno,birthday) values('1234567890',to_date('19951130','yyyymmdd')); --6.约束：majorno in substr(sno,3,2) insert into t_stud_j524(sno,majorno) values('1234567890','35'); --7.外键约束：foreign key(mno) references t_stud_j524(sno) insert into t_stud_j524(sno,mno) values('1234567890','1234567891'); --8.外键约束：foreign key(majorno) references t_major_j524(mno) insert into t_stud_j524(sno,majorno) values('0987654321','87'); --9.成功插入一条完整数据 insert into t_stud_j524 values('1234567890','余东','男','18790450031','[email protected]',to_date('20001130','yyyymmdd'),'1234567890','34');
5.为每个学生建立相关用户，实现权限控制，每个学生可查询自己的信息，班长可查询本班所有学生信息； 为每个专业负责建立用户，每个专业负责可查询本专业所有学生信息。
---权限管理：为学生、班长、年级长分别建立视图并赋予相应查看权限--- set heading off set feedback off set echo off set termout off spool d:\users.txt --删除用户 select 'drop user u'||sno||';' from t_stud_j524; --新建用户（为每个学生） select 'create user u'||sno||' identified by p'||sno||';' from t_stud_j524; --授予connect权利 select 'grant connect to u'||sno||';' from t_stud_j524; --删除学生用户视图 select 'drop view vi'||sno||';' from t_stud_j524; --为每个用户建立各自的视图 select 'create view vi'||sno||' as select * from t_stud_j524 where sno='||sno||';' from t_stud_j524; --为每个用户授予查询视图的权利 select 'grant select on vi'||sno||' to u'||sno||';' from t_stud_j524; --删除班长用户视图 select 'drop view vi'||sno||';' from t_stud_j524 where sno=mno; select 'drop view vib'||sno||';' from t_stud_j524 where sno=mno; --为班长建立班长视图 select 'create view vib'||sno||' as select * from t_stud_j524 where mno='||sno||';' from t_stud_j524 where sno=mno; --为班长授予查询班长视图的权利 select 'grant select on vib'||sno||' to u'||sno||';' from t_stud_j524 where sno=mno; --删除年级负责人用户视图 select 'drop view vi'||t_stud_j524.sno||';' from t_stud_j524,t_major_j524 where t_stud_j524.majorno=t_major_j524.mno and t_stud_j524.sname=t_major_j524.mdean; select 'drop view vib'||t_stud_j524.sno||';' from t_stud_j524,t_major_j524 where t_stud_j524.majorno=t_major_j524.mno and t_stud_j524.sname=t_major_j524.mdean; select 'drop view viz'||t_stud_j524.sno||';' from t_stud_j524,t_major_j524 where t_stud_j524.majorno=t_major_j524.mno and t_stud_j524.sname=t_major_j524.mdean; --为年级负责人创建年级视图 select 'create view viz'||t_stud_j524.sno||' as select * from t_stud_j524 where majorno='||t_stud_j524.majorno||';' from t_stud_j524,t_major_j524 where t_stud_j524.majorno=t_major_j524.mno and t_stud_j524.sname=t_major_j524.mdean; --为年级负责人授予查询年级视图的权利 select 'grant select on viz'||t_stud_j524.sno||' to u'||t_stud_j524.sno||';' from t_stud_j524,t_major_j524 where t_stud_j524.majorno=t_major_j524.mno and t_stud_j524.sname=t_major_j524.mdean; spool off set heading on set feedback on set echo on set termout on ------------------------ @d:\users.txt --普通学生仅查询自己 conn u0919170225/p0919170225 select * from u_j524.vi0919170225; --班长可以查询自己和班级同学 conn u0919170112/p0919170112 select * from u_j524.vib0919170112; --年级长可以查询自己和年同学 conn u0921170226/p0921170226 select * from u_j524.viz0921170226; set heading off set feedback off set echo off set termout off spool d:\users.txt
实验源码
drop user u_j524 cascade; create user u_j524 identified by p123456; grant resource,connect,dba to u_j524; conn u_j524/p123456 ---------------建表---------------- create table t_major_j524( mno varchar2(2), mname varchar2(32), loc varchar2(32), mdean varchar2(32), constraint pk_major_mno primary key(mno), constraint ck_major_mname check(loc in('主校区','南校区','新校区','铁道校区','湘雅校区'))); create table t_stud_j524( sno varchar2(10), sname varchar2(32), sex varchar2(32), tel varchar2(32), email varchar2(32), birthday date, mno varchar2(10), majorno varchar2(2), constraint pk_stud_sno primary key(sno), constraint ck_stud_sex check(sex in('男','女','其它')), constraint ck_stud_email check(email like '%@%.%'), constraint ck_stud_birthday check(birthday>to_date('19990731','yyyymmdd'))， constraint ck_stud_majorno check(majorno in substr(sno,3,2)), constraint fk_stud_mno foreign key(mno) references t_stud_j524(sno), constraint fk_stud_majorno foreign key(majorno) references t_major_j524(mno)); -----测试约束 ---------t_major_j524约束 column mno format a3; column mname format a32; column loc format a10; column mdean format a12; column sno format a11; column sname format a7; column sex format a4; column tel format a12; column email format a32; column birthday format a11; column mno format a11; column majorno format a3; set linesize 150; set pagesize 100; --1.主键不为空 insert into t_major_j524(mno) values(''); --2.主键不能重复 insert into t_major_j524(mno) values('34'); insert into t_major_j524(mno) values('34'); delete from t_major_j524; --3.约束：loc in('主校区','南校区','新校区','铁道校区','湘雅校区') insert into t_major_j524(loc) values('北校区'); --4.成功插入几条完整数据 insert into t_major_j524 values('34','计算机科学与技术','主校区','许宁'); insert into t_major_j524 values('35','大数据','主校区','许宁'); select * from t_major_j524; --t_stud_j524约束 --1.主键不为空 insert into t_stud_j524(sno) values(''); --2.主键不能重复 insert into t_stud_j524(sno) values('1234567890'); insert into t_stud_j524(sno) values('1234567890'); delete from t_stud_j524; --3.约束：sex in('男','女','其它') insert into t_stud_j524(sno,sex) values('1234567890','不知道'); --4.约束：email like '%@%.%' insert into t_stud_j524(sno,email) values('1234567890','123456@789'); --5.约束：birthday>to_date('19990731','yyyymmdd') insert into t_stud_j524(sno,birthday) values('1234567890',to_date('19951130','yyyymmdd')); --6.约束：majorno in substr(sno,3,2) insert into t_stud_j524(sno,majorno) values('1234567890','35'); --7.外键约束：foreign key(mno) references t_stud_j524(sno) insert into t_stud_j524(sno,mno) values('1234567890','1234567891'); --8.外键约束：foreign key(majorno) references t_major_j524(mno) insert into t_stud_j524(sno,majorno) values('0987654321','87'); --9.成功插入一条完整数据 insert into t_stud_j524 values('1234567890','余东','男','18790450031','[email protected]',to_date('20001130','yyyymmdd'),'1234567890','34'); ------插入实验数据：3个专业6个班共计36人--------- delete from t_stud_j524; delete from t_major_j524; insert into t_major_j524 values('21','数据科学与大数据技术','主校区','张三'); insert into t_major_j524 values('02','计算机科学与技术','主校区','许宁'); insert into t_major_j524 values('19','物联网工程','主校区','李四'); --数据科学与大数据技术13名同学 insert into t_stud_j524 values('0921170114','李一','男','15390451131','[email protected]',to_date('20000122','yyyymmdd'),'0921170114','21'); insert into t_stud_j524 values('0921170115','李二','男','18726450331','[email protected]',to_date('20001010','yyyymmdd'),'0921170114','21'); insert into t_stud_j524 values('0921170117','李三','男','13260450831','[email protected]',to_date('20001220','yyyymmdd'),'0921170114','21'); insert into t_stud_j524 values('0921170120','李四','男','18655450232','[email protected]',to_date('20000525','yyyymmdd'),'0921170114','21'); insert into t_stud_j524 values('0921170122','李五','女','15342450031','[email protected]',to_date('20000214','yyyymmdd'),'0921170114','21'); insert into t_stud_j524 values('0921170123','李六','女','18790332061','[email protected]',to_date('20000323','yyyymmdd'),'0921170114','21'); insert into t_stud_j524 values('0921170124','李七','男','13250450031','[email protected]',to_date('20000930','yyyymmdd'),'0921170114','21'); insert into t_stud_j524 values('0921170207','张一','男','18790450032','[email protected]',to_date('20001130','yyyymmdd'),'0921170207','21'); insert into t_stud_j524 values('0921170225','张二','女','15256350531','[email protected]',to_date('20000722','yyyymmdd'),'0921170207','21'); insert into t_stud_j524 values('0921170226','张三','男','18796650031','[email protected]',to_date('20001023','yyyymmdd'),'0921170207','21'); insert into t_stud_j524 values('0921170227','张四','女','18390455631','[email protected]',to_date('20000504','yyyymmdd'),'0921170207','21'); insert into t_stud_j524 values('0921170209','张五','男','18790460031','[email protected]',to_date('20010130','yyyymmdd'),'0921170207','21'); insert into t_stud_j524 values('0921170228','张六','女','18592450551','[email protected]',to_date('20000101','yyyymmdd'),'0921170207','21'); --计算机科学与技术12名同学 insert into t_stud_j524 values('0902170516','王二','男','18790450032','[email protected]',to_date('20001130','yyyymmdd'),'0902170516','02'); insert into t_stud_j524 values('0902170520','王三','男','18790460031','[email protected]',to_date('20010130','yyyymmdd'),'0902170516','02'); insert into t_stud_j524 values('0902170521','王四','男','15390451131','[email protected]',to_date('20000122','yyyymmdd'),'0902170516','02'); insert into t_stud_j524 values('0902170523','杜豪','男','18726450331','[email protected]',to_date('20001010','yyyymmdd'),'0902170516','02'); insert into t_stud_j524 values('0902170524','宋海磊','男','13278882876','[email protected]',to_date('20001220','yyyymmdd'),'0902170516','02'); insert into t_stud_j524 values('0902170525','翟树杰','男','13278886638','[email protected]',to_date('20000525','yyyymmdd'),'0902170516','02'); insert into t_stud_j524 values('0902170526','胡旭东','男','15342450031','[email protected]',to_date('20000214','yyyymmdd'),'0902170516','02'); insert into t_stud_j524 values('0902170601','嬴政','男','18790332061','[email protected]',to_date('20000323','yyyymmdd'),'0902170601','02'); insert into t_stud_j524 values('0902170602','刘邦','男','13250450031','[email protected]',to_date('20000930','yyyymmdd'),'0902170601','02'); insert into t_stud_j524 values('0902170604','李广','男','15256350531','[email protected]',to_date('20000722','yyyymmdd'),'0902170601','02'); insert into t_stud_j524 values('0902170605','李世民','女','18796650031','[email protected]',to_date('20001023','yyyymmdd'),'0902170601','02'); insert into t_stud_j524 values('0902170625','赵匡胤','女','18796650031','[email protected]',to_date('20001023','yyyymmdd'),'0902170601','02'); --物联网工程11名同学 insert into t_stud_j524 values('0919170112','周一','女','18790450032','[email protected]',to_date('20001130','yyyymmdd'),'0919170112','19'); insert into t_stud_j524 values('0919170120','周二','男','18790460031','[email protected]',to_date('20010130','yyyymmdd'),'0919170112','19'); insert into t_stud_j524 values('0919170107','周三','男','15390451131','[email protected]',to_date('20000122','yyyymmdd'),'0919170112','19'); insert into t_stud_j524 values('0919170109','周四','男','18726450331','[email protected]',to_date('20001010','yyyymmdd'),'0919170112','19'); insert into t_stud_j524 values('0919170110','周五','男','13260450831','[email protected]',to_date('20001220','yyyymmdd'),'0919170112','19'); insert into t_stud_j524 values('0919170115','周六','女','18655450232','[email protected]',to_date('20000525','yyyymmdd'),'0919170112','19'); insert into t_stud_j524 values('0919170214','陈一','男','15342450031','[email protected]',to_date('20000214','yyyymmdd'),'0919170214','19'); insert into t_stud_j524 values('0919170215','陈二','女','18790332061','[email protected]',to_date('20000323','yyyymmdd'),'0919170214','19'); insert into t_stud_j524 values('0919170217','陈三','女','13250450031','[email protected]',to_date('20000930','yyyymmdd'),'0919170214','19'); insert into t_stud_j524 values('0919170220','陈四','女','15256350531','[email protected]',to_date('20000722','yyyymmdd'),'0919170214','19'); insert into t_stud_j524 values('0919170225','陈五','男','18796650031','[email protected]',to_date('20001023','yyyymmdd'),'0919170214','19'); ---权限管理：为学生、班长、年级长分别建立视图并赋予相应查看权限--- set heading off set feedback off set echo off set termout off spool d:\users.txt --删除用户 select 'drop user u'||sno||';' from t_stud_j524; --新建用户（为每个学生） select 'create user u'||sno||' identified by p'||sno||';' from t_stud_j524; --授予connect权利 select 'grant connect to u'||sno||';' from t_stud_j524; --删除学生用户视图 select 'drop view vi'||sno||';' from t_stud_j524; --为每个用户建立各自的视图 select 'create view vi'||sno||' as select * from t_stud_j524 where sno='||sno||';' from t_stud_j524; --为每个用户授予查询视图的权利 select 'grant select on vi'||sno||' to u'||sno||';' from t_stud_j524; --删除班长用户视图 select 'drop view vi'||sno||';' from t_stud_j524 where sno=mno; select 'drop view vib'||sno||';' from t_stud_j524 where sno=mno; --为班长建立班长视图 select 'create view vib'||sno||' as select * from t_stud_j524 where mno='||sno||';' from t_stud_j524 where sno=mno; --为班长授予查询班长视图的权利 select 'grant select on vib'||sno||' to u'||sno||';' from t_stud_j524 where sno=mno; --删除年级负责人用户视图 select 'drop view vi'||t_stud_j524.sno||';' from t_stud_j524,t_major_j524 where t_stud_j524.majorno=t_major_j524.mno and t_stud_j524.sname=t_major_j524.mdean; select 'drop view vib'||t_stud_j524.sno||';' from t_stud_j524,t_major_j524 where t_stud_j524.majorno=t_major_j524.mno and t_stud_j524.sname=t_major_j524.mdean; select 'drop view viz'||t_stud_j524.sno||';' from t_stud_j524,t_major_j524 where t_stud_j524.majorno=t_major_j524.mno and t_stud_j524.sname=t_major_j524.mdean; --为年级负责人创建年级视图 select 'create view viz'||t_stud_j524.sno||' as select * from t_stud_j524 where majorno='||t_stud_j524.majorno||';' from t_stud_j524,t_major_j524 where t_stud_j524.majorno=t_major_j524.mno and t_stud_j524.sname=t_major_j524.mdean; --为年级负责人授予查询年级视图的权利 select 'grant select on viz'||t_stud_j524.sno||' to u'||t_stud_j524.sno||';' from t_stud_j524,t_major_j524 where t_stud_j524.majorno=t_major_j524.mno and t_stud_j524.sname=t_major_j524.mdean; /* select 'drop user u'||sno||';' from t_stud_j524; select 'create user u'||sno||' identified by p'||sno||';' from t_stud_j524; select 'grant connect to u'||sno||';' from t_stud_j524; select 'drop view vi'||sno||';' from t_stud_j524; select 'create view vi'||sno||' as select * from t_stud_j524 where sno='||sno||';' from t_stud_j524; select 'grant select on vi'||sno||' to u'||sno||';' from t_stud_j524; select 'drop view vi'||sno||';' from t_stud_j524 where sno=mno; select 'drop view vib'||sno||';' from t_stud_j524 where sno=mno; select 'create view vib'||sno||' as select * from t_stud_j524 where mno='||sno||';' from t_stud_j524 where sno=mno; select 'grant select on vib'||sno||' to u'||sno||';' from t_stud_j524 where sno=mno; select 'drop view vi'||t_stud_j524.sno||';' from t_stud_j524,t_major_j524 where t_stud_j524.majorno=t_major_j524.mno and t_stud_j524.sname=t_major_j524.mdean; select 'drop view vib'||t_stud_j524.sno||';' from t_stud_j524,t_major_j524 where t_stud_j524.majorno=t_major_j524.mno and t_stud_j524.sname=t_major_j524.mdean; select 'drop view viz'||t_stud_j524.sno||';' from t_stud_j524,t_major_j524 where t_stud_j524.majorno=t_major_j524.mno and t_stud_j524.sname=t_major_j524.mdean; select 'create view viz'||t_stud_j524.sno||' as select * from t_stud_j524 where majorno='||t_stud_j524.majorno||';' from t_stud_j524,t_major_j524 where t_stud_j524.majorno=t_major_j524.mno and t_stud_j524.sname=t_major_j524.mdean; select 'grant select on viz'||t_stud_j524.sno||' to u'||t_stud_j524.sno||';' from t_stud_j524,t_major_j524 where t_stud_j524.majorno=t_major_j524.mno and t_stud_j524.sname=t_major_j524.mdean; */ spool off set heading on set feedback on set echo on set termout on ------------------------ @d:\users.txt --普通学生仅查询自己 conn u0919170225/p0919170225 select * from u_j524.vi0919170225; --班长可以查询自己和班级同学 conn u0919170112/p0919170112 select * from u_j524.vib0919170112; --年级长可以查询自己和年同学 conn u0921170226/p0921170226 select * from u_j524.viz0921170226; set heading off set feedback off set echo off set termout off spool d:\users.txt --删除用户 select 'drop user u'||sno||' cascade;' from t_stud_j524; spool off set heading on set feedback on set echo on set termout on