数据库实验1

jkzr

要求：

　　1.　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_???(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)）

　　　　stud_???(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。

　　　　注意表的命名规则

 　　2.　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，每个专业不小于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

　　3．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。

　　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； 为每个专业负责建立用户，每个专业负责可查询本专业所有学生信息。

 

 

建表，注意对应的完整性约束：

create user U_J122 identified by U_J123;
grant resource,connect to U_J122;
grant create view to U_J122;
connect U_J122/U_J123;

create table T_major_J122
( 
    mno char(2) primary key,
    mname varchar(20),
    loc varchar(20) check(loc in(\'主校区\',\'南校区\',\'新校区\',\'铁道校区\',\'湘雅校区\')),
    mdean varchar(20)
);

create table T_stud_J122
(
    sno char(10) primary key,
    sname varchar(20),
    sex varchar(10) check(sex in(\'男\',\'女\',\'其它\',\'其他\')),
    tel varchar(15),
    email varchar(20) check(email like \'%@%.%\'),
    birthday date check((TO_CHAR(\'yyyymmdd\'))>=\'19990731\'),
    mno char(10) references T_stud_J122(sno),
    majorno char(2) references T_major_J122(mno)
);

插入数据，测试相关完整性的约束：

insert into T_major_J122 values (\'02\',\'计算机科学与技术\',\'主校区\',\'胡一超\');
insert into T_major_J122 values (\'19\',\'大数据\',\'南校区\',\'胡二超\');
insert into T_major_J122 values (\'21\',\'物联网\',\'新校区\',\'胡三超\');

insert into T_stud_J122 values (\'0902160122\',\'周锐\',\'男\',\'18774894438\',\'838567391@qq.com\',\'11-11月-2000\',\'0902160122\',\'02\');
insert into T_stud_J122 values (\'0902160121\',\'胡一\',\'男\',\'18774894439\',\'838567392@qq.com\',\'12-11月-2000\',\'0902160122\',\'02\');
insert into T_stud_J122 values (\'0902160120\',\'胡二\',\'女\',\'18774894430\',\'838567393@qq.com\',\'13-11月-2000\',\'0902160122\',\'02\');
insert into T_stud_J122 values (\'0902160119\',\'胡三\',\'男\',\'18774894431\',\'838567394@qq.com\',\'14-11月-2000\',\'0902160122\',\'02\');
insert into T_stud_J122 values (\'0902160118\',\'胡四\',\'女\',\'18774894432\',\'838567395@qq.com\',\'15-11月-2000\',\'0902160122\',\'02\');
insert into T_stud_J122 values (\'0902160217\',\'胡五\',\'女\',\'18774894433\',\'838567396@qq.com\',\'16-11月-2000\',\'0902160217\',\'02\');
insert into T_stud_J122 values (\'0902160216\',\'胡六\',\'男\',\'18774894434\',\'838567397@qq.com\',\'17-11月-2000\',\'0902160217\',\'02\');
insert into T_stud_J122 values (\'0902160215\',\'胡七\',\'女\',\'18774894435\',\'838567398@qq.com\',\'18-11月-2000\',\'0902160217\',\'02\');
insert into T_stud_J122 values (\'0902160214\',\'胡八\',\'男\',\'18774894436\',\'838567399@qq.com\',\'19-11月-2000\',\'0902160217\',\'02\');
insert into T_stud_J122 values (\'0902160213\',\'胡九\',\'女\',\'18774894437\',\'838567390@qq.com\',\'20-11月-2000\',\'0902160217\',\'02\');

insert into T_stud_J122 values (\'0919160122\',\'任一\',\'女\',\'18674894438\',\'838564391@qq.com\',\'21-12月-2000\',\'0919160122\',\'19\');
insert into T_stud_J122 values (\'0919160121\',\'任二\',\'男\',\'18574894438\',\'838567491@qq.com\',\'22-12月-2000\',\'0919160122\',\'19\');
insert into T_stud_J122 values (\'0919160120\',\'任三\',\'女\',\'18474894438\',\'838567591@qq.com\',\'23-12月-2000\',\'0919160122\',\'19\');
insert into T_stud_J122 values (\'0919160119\',\'任四\',\'男\',\'18274894438\',\'838567691@qq.com\',\'24-12月-2000\',\'0919160122\',\'19\');
insert into T_stud_J122 values (\'0919160118\',\'任五\',\'男\',\'18374894438\',\'838567791@qq.com\',\'25-12月-2000\',\'0919160122\',\'19\');
insert into T_stud_J122 values (\'0919160217\',\'任六\',\'女\',\'18174794438\',\'838567891@qq.com\',\'26-12月-2000\',\'0919160217\',\'19\');
insert into T_stud_J122 values (\'0919160216\',\'任七\',\'男\',\'18074694438\',\'838567991@qq.com\',\'20-12月-2000\',\'0919160217\',\'19\');
insert into T_stud_J122 values (\'0919160215\',\'任八\',\'女\',\'18974594438\',\'838567091@qq.com\',\'27-12月-2000\',\'0919160217\',\'19\');
insert into T_stud_J122 values (\'0919160214\',\'任九\',\'男\',\'18764894438\',\'838567191@qq.com\',\'28-12月-2000\',\'0919160217\',\'19\');
insert into T_stud_J122 values (\'0919160213\',\'任十\',\'男\',\'18714894438\',\'838567291@qq.com\',\'29-12月-2000\',\'0919160217\',\'19\');

insert into T_stud_J122 values (\'0921160122\',\'刘一\',\'男\',\'11774844438\',\'828567391@qq.com\',\'22-11月-2000\',\'0921160122\',\'21\');
insert into T_stud_J122 values (\'0921160121\',\'刘二\',\'女\',\'12774874438\',\'838667391@qq.com\',\'23-11月-2000\',\'0921160122\',\'21\');
insert into T_stud_J122 values (\'0921160120\',\'刘三\',\'男\',\'17774884438\',\'838767391@qq.com\',\'24-11月-2000\',\'0921160122\',\'21\');
insert into T_stud_J122 values (\'0921160119\',\'刘四\',\'男\',\'14774834438\',\'838867391@qq.com\',\'25-11月-2000\',\'0921160122\',\'21\');
insert into T_stud_J122 values (\'0921160118\',\'刘五\',\'女\',\'19774821438\',\'838967391@qq.com\',\'26-11月-2000\',\'0921160122\',\'21\');
insert into T_stud_J122 values (\'0921160217\',\'刘六\',\'男\',\'18774899438\',\'838067391@qq.com\',\'27-11月-2000\',\'0921160217\',\'21\');
insert into T_stud_J122 values (\'0921160216\',\'刘七\',\'女\',\'18774898438\',\'838167391@qq.com\',\'28-11月-2000\',\'0921160217\',\'21\');
insert into T_stud_J122 values (\'0921160215\',\'刘八\',\'男\',\'18774896438\',\'838267391@qq.com\',\'29-11月-2000\',\'0921160217\',\'21\');
insert into T_stud_J122 values (\'0921160214\',\'刘九\',\'男\',\'18774895438\',\'838367391@qq.com\',\'30-11月-2000\',\'0921160217\',\'21\');
insert into T_stud_J122 values (\'0921160213\',\'刘十\',\'女\',\'18774893438\',\'838467391@qq.com\',\'21-11月-2000\',\'0921160217\',\'21\');

给每个学生建立相关用户：

select \'create user U\'||sno||\' identified by P\'||sno||\';\'from T_stud_J122;

connect system/zr13795;
create user U0902160118 identified by P0902160118;
create user U0902160119 identified by P0902160119;
create user U0902160120 identified by P0902160120;
create user U0902160121 identified by P0902160121;
create user U0902160122 identified by P0902160122;
create user U0902160213 identified by P0902160213;
create user U0902160214 identified by P0902160214;
create user U0902160215 identified by P0902160215;
create user U0902160216 identified by P0902160216;
create user U0902160217 identified by P0902160217;
create user U0919160118 identified by P0919160118;
create user U0919160119 identified by P0919160119;
create user U0919160120 identified by P0919160120;
create user U0919160121 identified by P0919160121;
create user U0919160122 identified by P0919160122;
create user U0919160213 identified by P0919160213;
create user U0919160214 identified by P0919160214;
create user U0919160215 identified by P0919160215;
create user U0919160216 identified by P0919160216;
create user U0919160217 identified by P0919160217;
create user U0921160118 identified by P0921160118;
create user U0921160119 identified by P0921160119;
create user U0921160120 identified by P0921160120;
create user U0921160121 identified by P0921160121;
create user U0921160122 identified by P0921160122;
create user U0921160213 identified by P0921160213;
create user U0921160214 identified by P0921160214;
create user U0921160215 identified by P0921160215;
create user U0921160216 identified by P0921160216;
create user U0921160217 identified by P0921160217;

select \'grant connect to U\'||sno||\';\'from T_stud_J122;

grant connect to U0902160118;
grant connect to U0902160119;
grant connect to U0902160120;
grant connect to U0902160121;
grant connect to U0902160122;
grant connect to U0902160213;
grant connect to U0902160214;
grant connect to U0902160215;
grant connect to U0902160216;
grant connect to U0902160217;
grant connect to U0919160118;
grant connect to U0919160119;
grant connect to U0919160120;
grant connect to U0919160121;
grant connect to U0919160122;
grant connect to U0919160213;
grant connect to U0919160214;
grant connect to U0919160215;
grant connect to U0919160216;
grant connect to U0919160217;
grant connect to U0921160118;
grant connect to U0921160119;
grant connect to U0921160120;
grant connect to U0921160121;
grant connect to U0921160122;
grant connect to U0921160213;
grant connect to U0921160214;
grant connect to U0921160215;
grant connect to U0921160216;
grant connect to U0921160217;

select \'create user U\'||mno||\' identified by P\'||mno||\';\'from T_major_J122;

create user U02 identified by P02;
create user U19 identified by P19;
create user U21 identified by P21;

select \'grant connect to U\'||mno||\';\'from T_major_J122;

grant connect to U02;
grant connect to U19;
grant connect to U21;

建立视图，实现权限控制：

create view V_view1_J122
as
select * from T_stud_J122
where \'U\'||sno=user or \'U\'||mno=user or \'U\'||majorno=user;

grant select on V_view1_J122 to public;

set linesize 200;
select * from U_J122.V_view1_J122;

conn U02/P02;
select * from U_J122.V_view1_J122;

 

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