一对多多对多SQL

您真正需要的是用于学院的表，用于课程的表以及一个关系表，您可以在其中存储多对多关系。我留给您查询以获取您正在寻找的结果:)

CREATE TABLE academy(  academy_id int(11) not null auto_increment,  name varchar(25) not null,  primary key (id), );CREATE TABLE course(course_id     int(11) not null auto_increment,course_name   VARCHAr(50)  NOT NULL ,primary key (course_id),);CREATE TABLE accademy_course(  academy_id int(11) not null,  course_id     int(11) not null ,  primary key (academy_id, course_id),  foreign key (academy_id) REFERENCES academy (academy_id) on delete cascade,  foreign key (course_id) REFERENCES course (course_id) on delete cascade);