e-r图
2018-04-01 20:08:00 15 举报
竞赛管理 er图,简单的er图,没有太多复杂的表
作者其他创作
大纲/内容
taskName
extend
extend是一个扩充表,当需要时可对任何实体进行扩充,数据存储采用key-value规则约定
uuid
status
id
属于
title
log
l_number
n
stu_number
term
拥有
description
pro_uuid
startTime
teamer_uuid
race_uuid
file
1
action
l_name
to
task
stu_password
pro_name
project
from
t_duty
l_password
file1
teacher
t_gender
teamer
t_email
progress
student
pro_progress
指导
kind
t_uuid
l_phone
l_uuid
race
stu_email
file3
message
stu_uuid
参与
file2
sendTime
pro_headman
stu_status
邀请
t_status
value
t_description
racename
stu_name
raceteacher
proName
time
invite
t_phone
endTime
teamer和race多对多关系 需要一个中间表
solver
dutyDescription
duty
leader
content
result
pro_document
teamer是团队成员,由学生信息生成,一个学生可以是多个团队的成员,由此便可实现一个学生参与多个项目
raceinfo
l_description
l_email
key
teamer_race
stu_duty
pro_persons
pro_status
l_duty
l_status
stu_gender
t_number
stu_description
teamerDescription
pro_tName
l_gender
solution
forwho
t_name
t_password
beginTime
task_uuid
pro_description
stu_phone
完成
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