Add JavaBean and DatabasePool

MySQL.sql

@@ -0,0 +1,154 @@
+SHOW DATABASES;
+SHOW TABLES;
+
+USE class;
+
+create table Faculty
+(
+    facID   int auto_increment comment '院系编号',
+    facName varchar(20) not null comment '学院名称',
+    constraint Faculty_pk
+        primary key (facID)
+)
+    comment '院系';
+
+create unique index Faculty_facID_uindex
+    on Faculty (facID);
+
+create unique index Faculty_facName_uindex
+    on Faculty (facName);
+
+create table Major
+(
+    majorID   int auto_increment comment '专业编号',
+    majorName varchar(20) not null comment '专业名称',
+    facID     int         not null comment '隶属院系',
+    constraint Major_pk
+        primary key (majorID),
+    constraint Major_facID_fk
+        foreign key (facID) references faculty (facID)
+)
+    comment '专业';
+
+create unique index Major_majorID_uindex
+    on Major (majorID);
+
+create unique index Major_majorName_uindex
+    on Major (majorName);
+
+create table Class
+(
+    classID  bigint auto_increment comment '班级编号',
+    majorID  int not null comment '隶属专业',
+    grade    int not null comment '年级',
+    classNum int not null comment '班号',
+    constraint Class_pk
+        primary key (classID),
+    constraint Class_majorID_fk
+        foreign key (majorID) references major (majorID)
+)
+    comment '班级';
+
+create unique index Class_classID_uindex
+    on Class (classID);
+
+create table Student
+(
+    stuID     bigint auto_increment comment '学号',
+    stuName   varchar(10)     not null comment '学生姓名',
+    stuGender enum ('m', 'f') not null comment '性别',
+    classID   bigint          not null comment '隶属班级',
+    passwd    char(128)       not null comment '学生密码',
+    salt      char(32)        not null comment '加盐',
+    constraint Student_pk
+        primary key (stuID),
+    constraint Student_classID_fk
+        foreign key (classID) references class (classID)
+)
+    comment '学生';
+
+create unique index Student_stuID_uindex
+    on Student (stuID);
+
+create table Teacher
+(
+    tchID     bigint auto_increment comment '工号',
+    tchName   varchar(20)     not null comment '教师姓名',
+    tchGender enum ('m', 'f') not null comment '教师性别',
+    facID     int             not null comment '隶属院系',
+    passwd    char(128)       not null comment '教师密码',
+    salt      char(32)        not null comment '加盐',
+    constraint Teacher_pk
+        primary key (tchID),
+    constraint Teacher_facID_fk
+        foreign key (facID) references faculty (facID)
+)
+    comment '教师';
+
+create unique index Teacher_tchID_uindex
+    on Teacher (tchID);
+
+create table Subject
+(
+    subID   int auto_increment comment '科目编号',
+    subName varchar(40) not null comment '科目名',
+    constraint Subject_pk
+        primary key (subID)
+)
+    comment '科目';
+
+create unique index Subject_subID_uindex
+    on Subject (subID);
+
+create unique index Subject_subName_uindex
+    on Subject (subName);
+
+create table Course
+(
+    courID       bigint auto_increment comment '课程编号',
+    subID        int       not null comment '隶属科目',
+    tchID        bigint    not null comment '授课教师',
+    courTimeFrom timestamp not null,
+    courTimeEnd  timestamp not null,
+    constraint Course_pk
+        primary key (courID),
+    constraint Course_subID_fk
+        foreign key (subID) references Subject(subID),
+    constraint Course_tchID_fk
+        foreign key (tchID) references Teacher(tchID)
+)
+    comment '课程';
+
+create unique index Course_courID_uindex
+    on Course (courID);
+
+create table Attendance
+(
+    attID    char(36)                  not null comment '考勤编号',
+    courID    bigint                    not null comment '隶属课程',
+    stuID     int                       not null comment '隶属学生',
+    attTie    timestamp                 null comment '考勤时间',
+    attStatus enum ('not_signed', 'signed', 'absence', 'personal_leave', 'sick_leave', 'public_holiday', 'late', 'leave_early') default 'not_signed' not null comment '考勤状态',
+    constraint Attendance_pk
+        primary key (attID)
+)
+    comment '考勤';
+
+create unique index Attendance_courID_uindex
+    on Attendance (attID);
+
+select *
+from faculty;
+
+ALTER TABLE faculty
+    AUTO_INCREMENT = 19;
+
+delete
+from faculty;
+
+INSERT INTO faculty
+values (2, '计算机学院'),
+       (18, '工程训练中心');
+
+
+SELECT EXISTS(SELECT 1 FROM faculty WHERE facName = '信息学院')