create database attendance;use attendance;drop table branch;create table branch(branch_id int not null auto_increment , branch_name varchar(5) not null, primary key (branch_id));insert into branch (branch_id,branch_name) values(1,"CSE");insert into branch (branch_id,branch_name) values(2,"ECE");insert into branch (branch_id,branch_name) values(3,"EIE");insert into branch (branch_id,branch_name) values(4,"IT");desc branch;select * from branch;drop table section;create table section(section_id int not null auto_increment , section_name varchar(1)not null, primary key (section_id));insert into section (section_id,section_name) values(1,"A");insert into section (section_id,section_name) values(2,"B");insert into section (section_id,section_name) values(3,"C");insert into section (section_id,section_name) values(4,"D");insert into section (section_id,section_name) values(5,"E");desc section;select * from section;drop table each_class;create table each_class (class_id int not null auto_increment ,branch_id int ,section_id int , constraint fk_bi foreign key (branch_id) references branch(branch_id), constraint fk_si foreign key (section_id) references section(section_id) , primary key (class_id));insert into each_class (class_id,branch_id,section_id) values (1,1,1);insert into each_class (class_id,branch_id,section_id) values (2,1,2);insert into each_class (class_id,branch_id,section_id) values (3,1,3);insert into each_class (class_id,branch_id,section_id) values (4,2,1);insert into each_class (class_id,branch_id,section_id) values (5,3,1);insert into each_class (class_id,branch_id,section_id) values (6,4,1);desc each_class;select * from each_class;drop table student ;create table student (student_roll_no int not null,primary key (student_roll_no,class_id) ,student_name varchar(100) not null,class_id int ,constraint fk_ci foreign key (class_id) references each_class(class_id));insert into student values(1,"a",1);insert into student values(2,"b",1);insert into student values(3,"c",1);insert into student values(4,"d",1);insert into student values(5,"e",1);insert into student values(1,"a",2);insert into student values(2,"b",2);insert into student values(3,"c",2);insert into student values(4,"d",2);insert into student values(5,"e",2);insert into student values(1,"a",3);insert into student values(2,"b",3);insert into student values(3,"c",3);insert into student values(4,"d",3);insert into student values(5,"e",3);insert into student values(1,"a",4);insert into student values(2,"b",4);insert into student values(3,"c",4);insert into student values(4,"d",4);insert into student values(5,"e",4);insert into student values(1,"a",5);insert into student values(2,"b",5);insert into student values(3,"c",5);insert into student values(4,"d",5);insert into student values(5,"e",5);insert into student values(1,"a",6);insert into student values(2,"b",6);insert into student values(3,"c",6);insert into student values(4,"d",6);insert into student values(5,"e",6);desc student;select * from student;create table subject (subject_id int not null auto_increment , subject_name varchar(50) not null, primary key(subject_id));insert into subject values (1,"Operating Systems");insert into subject values (2,"Computer Networks");insert into subject values (3,"Compiler Design");insert into subject values (4,"Software Engineering");insert into subject values (5,"Principles of Programming Languages");insert into subject values (6,"Intellectual Property Rights");create table lecturer (lecturer_id int not null auto_increment , class_id int , subject_id int ,constraint fk_sii foreign key (subject_id) references subject(subject_id) ,constraint fk_cii foreign key (class_id) references each_class(class_id),primary key(lecturer_id,class_id,subject_id) );insert into lecturer values (1,1,1);insert into lecturer values (1,2,1);insert into lecturer values (1,3,1);insert into lecturer values (1,4,1);insert into lecturer values (1,5,1);insert into lecturer values (1,6,1);insert into lecturer values (2,1,2);insert into lecturer values (2,2,2);insert into lecturer values (2,3,2);insert into lecturer values (2,4,2);insert into lecturer values (2,5,2);insert into lecturer values (2,6,2);insert into lecturer values (3,1,3);insert into lecturer values (3,2,3);insert into lecturer values (3,3,3);insert into lecturer values (3,4,3);insert into lecturer values (3,5,3);insert into lecturer values (3,6,3);insert into lecturer values (4,1,4);insert into lecturer values (4,2,4);insert into lecturer values (4,3,4);insert into lecturer values (4,4,4);insert into lecturer values (4,5,4);insert into lecturer values (4,6,4);insert into lecturer values (5,1,5);insert into lecturer values (5,2,5);insert into lecturer values (5,3,5);insert into lecturer values (5,4,5);insert into lecturer values (5,5,5);insert into lecturer values (5,6,5);insert into lecturer values (6,1,6);insert into lecturer values (6,2,6);insert into lecturer values (6,3,6);insert into lecturer values (6,4,6);insert into lecturer values (6,5,6);insert into lecturer values (6,6,6);create table period (period_id int auto_increment not null,the_date date not null,lecturer_id int,class_id int ,primary key(period_id) , constraint fk_li foreign key (lecturer_id) references lecturer(lecturer_id) ,constraint fk_ciii foreign key (class_id) references each_class(class_id) );insert into period (the_date,lecturer_id,class_id) values (curdate(),1,1);insert into period (the_date,lecturer_id,class_id) values (curdate(),2,1);insert into period (the_date,lecturer_id,class_id) values (curdate(),3,1);insert into period (the_date,lecturer_id,class_id) values (curdate(),4,1);insert into period (the_date,lecturer_id,class_id) values (curdate(),5,1);insert into period (the_date,lecturer_id,class_id) values (curdate(),6,1);insert into period (the_date,lecturer_id,class_id) values (curdate(),1,2);insert into period (the_date,lecturer_id,class_id) values (curdate(),2,2);insert into period (the_date,lecturer_id,class_id) values (curdate(),3,2);insert into period (the_date,lecturer_id,class_id) values (curdate(),4,2);insert into period (the_date,lecturer_id,class_id) values (curdate(),5,2);insert into period (the_date,lecturer_id,class_id) values (curdate(),6,2);insert into period (the_date,lecturer_id,class_id) values (curdate(),1,3);insert into period (the_date,lecturer_id,class_id) values (curdate(),2,3);insert into period (the_date,lecturer_id,class_id) values (curdate(),3,3);insert into period (the_date,lecturer_id,class_id) values (curdate(),4,3);insert into period (the_date,lecturer_id,class_id) values (curdate(),5,3);insert into period (the_date,lecturer_id,class_id) values (curdate(),6,3);insert into period (the_date,lecturer_id,class_id) values (curdate(),1,4);insert into period (the_date,lecturer_id,class_id) values (curdate(),2,4);insert into period (the_date,lecturer_id,class_id) values (curdate(),3,4);insert into period (the_date,lecturer_id,class_id) values (curdate(),4,4);insert into period (the_date,lecturer_id,class_id) values (curdate(),5,4);insert into period (the_date,lecturer_id,class_id) values (curdate(),6,4);insert into period (the_date,lecturer_id,class_id) values (curdate(),1,5);insert into period (the_date,lecturer_id,class_id) values (curdate(),2,5);insert into period (the_date,lecturer_id,class_id) values (curdate(),3,5);insert into period (the_date,lecturer_id,class_id) values (curdate(),4,5);insert into period (the_date,lecturer_id,class_id) values (curdate(),5,5);insert into period (the_date,lecturer_id,class_id) values (curdate(),6,5);insert into period (the_date,lecturer_id,class_id) values (curdate(),1,6);insert into period (the_date,lecturer_id,class_id) values (curdate(),2,6);insert into period (the_date,lecturer_id,class_id) values (curdate(),3,6);insert into period (the_date,lecturer_id,class_id) values (curdate(),4,6);insert into period (the_date,lecturer_id,class_id) values (curdate(),5,6);insert into period (the_date,lecturer_id,class_id) values (curdate(),6,6);select * from period;desc period;desc student;create table attendance (attendance_id int not null auto_increment , primary key(attendance_id) ,period_id int , student_roll_no int ,attendance_status tinyint(1) , constraint fk_ppi foreign key (period_id) references period(period_id) , constraint fk_lsi foreign key (student_roll_no) references student(student_roll_no) );insert into attendance (period_id,student_roll_no,attendance_status) values(1,1,0);insert into attendance (period_id,student_roll_no,attendance_status) values(1,2,1);insert into attendance (period_id,student_roll_no,attendance_status) values(1,3,1);insert into attendance (period_id,student_roll_no,attendance_status) values(1,4,1);insert into attendance (period_id,student_roll_no,attendance_status) values(1,5,0);insert into attendance (period_id,student_roll_no,attendance_status) values(2,1,0);insert into attendance (period_id,student_roll_no,attendance_status) values(2,2,1);insert into attendance (period_id,student_roll_no,attendance_status) values(2,3,1);insert into attendance (period_id,student_roll_no,attendance_status) values(2,4,1);insert into attendance (period_id,student_roll_no,attendance_status) values(2,5,0);