大学生竞赛管理系统项目

大学生竞赛管理系统设计

一个学生可以参加多个学科竞赛&＃xff0c;竞赛分为不同等级&＃xff0c;按照重要性可以分为 A 类、B类和 C 类&＃xff0c;学生可以多人组队参加一个比赛&＃xff0c;每个队可以有多个指导教师&＃xff0c;竞赛成绩按照
获奖级别有国家级和省级&＃xff0c;分为一等奖、二等奖、三等奖&＃xff0c;每种竞赛每年都有相对固定的比赛时间、名称和主办机构。试设计一个大学生竞赛管理系统&＃xff0c;能够完成对学生竞赛的管理&＃xff0c;可以实现统计高校各个学院某个时间段内竞赛的参加和获奖情况&＃xff0c;也可以统计每个同学或每个年级某个时间段内竞赛的参加和获奖情况。

(1)画出系统的 E-R 图&＃xff0c;给出实体或联系的属性&＃xff0c;标明联系的种类&＃xff1b;

(2)写出关系模式&＃xff1b;
学院&＃xff08;学院号&＃xff0c;学院名称&＃xff0c;成立时间&＃xff09;
专业&＃xff08;专业号&＃xff0c;专业名称&＃xff0c;学院号&＃xff09;
学生&＃xff08;学号&＃xff0c;姓名&＃xff0c;班级&＃xff0c;专业号&＃xff09;
团队&＃xff08;团队编号&＃xff0c;项目名称&＃xff0c;团队名称&＃xff0c;竞赛编号&＃xff0c;获奖级别&＃xff0c;获奖奖项&＃xff0c;开始时间&＃xff0c;获奖时间&＃xff09;
竞赛&＃xff08;竞赛编号&＃xff0c;名称&＃xff0c;主办方&＃xff0c;等级&＃xff0c;比赛月份&＃xff09;
老师&＃xff08;工号&＃xff0c;姓名&＃xff0c;职称&＃xff09;
团队指导&＃xff08;团队编号&＃xff0c;工号&＃xff09;
团队组成&＃xff08;团队编号&＃xff0c;学号&＃xff09;

(3)根据关系规范理论进行数据库的逻辑设计&＃xff0c;给出数据库表的设计&＃xff0c;数据库表设计格 式参照下面&＃xff1a;

表 1 学院表&＃xff08;college&＃xff09;

表 2 专业表&＃xff08;major&＃xff09;

表 3 学生表&＃xff08;student&＃xff09;

表 4 团队表&＃xff08;team&＃xff09;

表 5 老师表&＃xff08;teacher&＃xff09;

表 6 竞赛表&＃xff08;competeinfo&＃xff09;

表 7 团队指导表&＃xff08;directioninfo&＃xff09;

表 8 团队组成表&＃xff08;componentinfo&＃xff09;

(5)在 Sql server 数据库中创建数据库 test 并创建相应的数据库表&＃xff1b;
(6)可以通过导入文件的方式在数据库表中输入若干条数据&＃xff1b;
通过SQL Server导入各表数据&＃xff1a;
在sql server中创建bigtest数据库&＃xff0c;使用如下语句进行数据库建表
CREATE TABLE college(
collegekey int primary key,
name char(30) not null,
collegetime date null
)
CREATE TABLE major(
majorkey char(6) primary key,
majorname varchar(30) null,
collegekey int null references college(collegekey)
)

CREATE TABLE student(
stid char(6) primary key,
sname char(20) null,
class char(20) null,
majorkey char(6) null references major(majorkey)
)

CREATE TABLE team(
teamid int primary key,
pname varchar(30) null,
tname varchar(30) null,
cid int null references competeinfo(cid),
pgrade char(10) null,
pburse char(10) null,
ptime date null
)

CREATE TABLE teacher(
tid char(6) primary key,
tname char(20) null,
title char(20) null
)

CREATE TABLE competeinfo(
cid int primary key,
cname varchar(100) not null,
cunit varchar(100) not null,
cgrade char(1) not null check (cgrade in (‘A’,‘B’,‘C’)),
cmonth char(2) null,
)

CREATE TABLE directioninfo(
teamid int references team(teamid),
tid char(6) references teacher(tid),
primary key(teamid,tid)
)

(7)自己构造若干 SQL 语句&＃xff0c;完成对数据库的调用、并实现题目所给统计要求&＃xff0c;SQL 语 句至少为 10 条&＃xff0c;要求自定义功能要求&＃xff0c;并给出 SQL 语句结果&＃xff0c;包括下面的语句&＃xff1a;
create table 、create index 、 create view 、 select 语句 (至少 3 条&＃xff0c;要把子句用上&＃xff0c; 包括 from 子句、where 字句、group by 子句、having 字句、order by 子句)、insert 语句、 delete 语句、update 语句、grant 语句

create index语句&＃xff1a;
把student表中按学号升序和班级降序的建立索引
create index studentindexs
on student(stid asc,class desc)
把team表中按竞赛号降序建立索引
create index team_index
on team(cid desc)
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create view语句&＃xff1a;
创建一个视图Viewprize&＃xff0c;统计人工智能学院不同专业国家级、省级的获奖总数量
create view Viewprize
as
select college.name,pgrade,major.majorname,COUNT(pgrade) as num
from team,componentinfo,student,major,college
where team.teamid &＃61; componentinfo.teamid
and componentinfo.stid &＃61; student.stid
and student.majorkey &＃61; major.majorkey
and major.collegekey &＃61; college.collegekey
and college.name &＃61;‘人工智能与数据科学学院’
group by college.name,majorname,pgrade
having pgrade <> ‘NULL’

insert语句&＃xff1a;
插入一条学生数据
insert student
values(‘151020’,‘张杰’,‘计141’,‘080901’)

插入一条团队数据
insert team values(26,‘面向未来的系统’,‘未来’,16,‘2019/8/29’,NULL,NULL,NULL)

delete语句&＃xff1a;
删除学号为151020的student信息
delete student
where stid &＃61; ‘151020’;

删除“面向未来的系统”队名的team信息
delete team
where pname &＃61; ‘面向未来的系统’

update 语句
更新“未来1”队的指导老师
update directioninfo
set tid &＃61; (
select tid
from teacher
where teacher.tname &＃61; ‘孙盼’
)
where teamid &＃61; (
select teamid
from team
where team.tname &＃61; ‘未来1’
)

grant 语句
创建团队管理员角色&＃xff0c;对team表有查找更新插入权限&＃xff0c;创建用户&＃xff0c;分配团队管理员角色
create login zzy with password &＃61; ‘abc’,default_database &＃61; bigtestnew
create user zzy for login zzy

create role team_manager
grant select,insert,update
on team
to team_manager

exec sp_addrolemember ‘team_manager’,‘zzy’

select语句&＃xff1a;
查询未来1队的指导老师信息
select *
from teacher,directioninfo
where directioninfo.tid &＃61; teacher.tid
and directioninfo.teamid &＃61;
(select teamid
from team
where team.tname &＃61; ‘未来’)

查询计算机科学与技术专业的团队参加获奖情况
select cname,cgrade,pname,pgrade,pburse,student.stid,student.sname
from team,componentinfo,student,competeinfo
where team.teamid &＃61; componentinfo.teamid
and componentinfo.stid &＃61; student.stid
and competeinfo.cid &＃61; team.cid
and student.majorkey &＃61; (select majorkey
from major
where major.majorname &＃61; ‘计算机科学与技术’)
and pgrade !&＃61; ‘NULL’
group by cgrade,cname,pgrade,pburse,student.stid,
student.sname,team.pname

统计人工智能与数据科学学院的省级获取情况
select cname,cgrade,pname,pgrade,pburse,student.stid,student.sname
from team,componentinfo,student,competeinfo,major
where team.teamid &＃61; componentinfo.teamid
and componentinfo.stid &＃61; student.stid
and competeinfo.cid &＃61; team.cid
and student.majorkey &＃61; major.majorkey
and major.collegekey in (select collegekey
from college
where college.name &＃61; ‘人工智能与数据科学学院’)
group by cgrade,cname,pgrade,pburse,student.stid,
student.sname,team.pname
having pgrade <> ‘国家级’ and pgrade !&＃61; ‘NULL’

统计不同学院的专业的竞赛获奖情况
select college.name,pgrade,major.majorname,COUNT(pgrade) as num
from team,componentinfo,student,major,college
where team.teamid &＃61; componentinfo.teamid
and componentinfo.stid &＃61; student.stid
and student.majorkey &＃61; major.majorkey
and major.collegekey &＃61; college.collegekey
group by college.name,majorname,pgrade
having pgrade <> ‘NULL’
order by num

(9)对于复杂的报表查询逻辑处理和自定义完整性&＃xff0c;使用存储过程或触发器来完成。
1.查询学院不同年份&＃xff0c;不同月份&＃xff0c;各专业省级、国家级竞赛获奖总人数&＃xff0c;各学院的省级获奖情况&＃xff0c;各学院的国家级获奖情况&＃xff0c;学校获奖省级总人数&＃xff0c;学校获奖国家级总人数。
GO
create proc proc_include
&＃64;syear int,&＃64;date_begin int,&＃64;date_end int
as
declare &＃64;s_totalnumber int ,&＃64;g_totalnumber int
begin

print(‘学院各专业省级、国家级竞赛获奖总人数’)
select college.name,pgrade,major.majorname,COUNT(pgrade) as num
from team,componentinfo,student,major,college
where team.teamid &＃61; componentinfo.teamid
and componentinfo.stid &＃61; student.stid
and student.majorkey &＃61; major.majorkey
and major.collegekey &＃61; college.collegekey
and year(ptime) &＃61; &＃64;syear
and month(ptime)>&＃64;date_begin
and month(ptime)<&＃64;date_end
group by college.name,majorname,pgrade
having pgrade <> ‘NULL’
order by num

print(‘各学院的省级获奖情况’)
select college.name,pgrade,COUNT(pgrade) as num
from team,componentinfo,student,major,college
where team.teamid &＃61; componentinfo.teamid
and componentinfo.stid &＃61; student.stid
and student.majorkey &＃61; major.majorkey
and major.collegekey &＃61; college.collegekey
and year(ptime) &＃61; &＃64;syear
and month(ptime)>&＃64;date_begin
and month(ptime)<&＃64;date_end
group by college.name,pgrade
having pgrade <> ‘NULL’ and pgrade <> ‘国家级’

print(‘各学院的国家级获奖情况’)
select college.name,pgrade,COUNT(pgrade) as num
from team,componentinfo,student,major,college
where team.teamid &＃61; componentinfo.teamid
and componentinfo.stid &＃61; student.stid
and student.majorkey &＃61; major.majorkey
and major.collegekey &＃61; college.collegekey
and year(ptime) &＃61; &＃64;syear
and month(ptime)>&＃64;date_begin
and month(ptime)<&＃64;date_end
group by college.name,pgrade
having pgrade <> ‘NULL’ and pgrade <> ‘省级’

select &＃64;g_totalnumber &＃61; COUNT(pgrade)
from team
where year(ptime) &＃61; &＃64;syear
and month(ptime)>&＃64;date_begin
and month(ptime)<&＃64;date_end
and pgrade <> ‘NULL’ and pgrade <> ‘省级’

select &＃64;s_totalnumber &＃61; COUNT(pgrade)
from team
where year(ptime) &＃61; &＃64;syear
and month(ptime)>&＃64;date_begin
and month(ptime)<&＃64;date_end
and pgrade <> ‘NULL’ and pgrade <> ‘国家级’

print(‘学校获奖省级总人数&＃xff1a;’)
print &＃64;s_totalnumber
print(‘学校获奖国家级总人数&＃xff1a;’)
print &＃64;g_totalnumber
end