Add base data initialization

application/module-certificate/src/main/resources/drop.sql

+drop table if exists certificate cascade
\ No newline at end of file

application/module-certificate/src/main/resources/import.sql

+INSERT INTO certificate (id_certificate, certificate_file, certificate_file_name, id_course, generated_at, id_user) VALUES (1, 'certificate_file_1.pdf', 'Certificate for Course English A1', 2, '2023-04-29 10:30:00', 7);
+INSERT INTO certificate (id_certificate, certificate_file, certificate_file_name, id_course, generated_at, id_user) VALUES (2, 'certificate_file_2.pdf', 'Certificate for Course English A2', 3, '2023-04-28 14:15:00', 7);
+INSERT INTO certificate (id_certificate, certificate_file, certificate_file_name, id_course, generated_at, id_user) VALUES (3, 'certificate_file_2.pdf', 'Certificate for Course English A2', 3, '2023-04-28 14:15:00', 9);
+INSERT INTO certificate (id_certificate, certificate_file, certificate_file_name, id_course, generated_at, id_user) VALUES (4, 'certificate_file_2.pdf', 'Certificate for Course English B1', 4, '2023-04-28 14:15:00', 7);
+INSERT INTO certificate (id_certificate, certificate_file, certificate_file_name, id_course, generated_at, id_user) VALUES (5, 'certificate_file_2.pdf', 'Certificate for Course English B1', 4, '2023-04-28 14:15:00', 9);
+
+ALTER TABLE certificate ALTER COLUMN id_certificate RESTART WITH 6;
\ No newline at end of file

application/module-exercise/src/main/resources/drop.sql

+drop table if exists answer cascade
+drop table if exists exercise cascade
+drop table if exists question cascade
\ No newline at end of file

application/module-exercise/src/main/resources/import.sql

+-- exercise
+-- insert into exercise (id, lecture_id, description, difficulty, name) values (default, ?, ?, ?, ?)
+INSERT INTO exercise (id, lecture_id, description, difficulty, name) VALUES (1, 7, 'Practice using the present continuous tense.', 3, 'Present Continuous Exercise 1');
+INSERT INTO exercise (id, lecture_id, description, difficulty, name) VALUES (2, 7, 'Use the past simple to describe past events.', 6, 'Past Simple Exercise 1');
+INSERT INTO exercise (id, lecture_id, description, difficulty, name) VALUES (3, 8, 'Learn vocabulary related to food.', 2, 'Food Vocabulary Exercise 1');
+INSERT INTO exercise (id, lecture_id, description, difficulty, name) VALUES (4, 10, 'Practice answering common job interview questions.', 7, 'Job Interview Exercise 1');
+
+INSERT INTO exercise (id, lecture_id, description, difficulty, name) VALUES (5, 2, 'Übung zum Begrüßen und Vorstellen', 2, 'Begrüßung und Vorstellung Übung');
+
+ALTER TABLE exercise ALTER COLUMN id RESTART WITH 6;
+
+-- question
+-- insert into question (id, exercise_id, text) values (default, ?, ?)
+INSERT INTO question (id, exercise_id, text) VALUES (1, 1, 'What is the correct form of the present continuous tense of "run"?');
+INSERT INTO question (id, exercise_id, text) VALUES (2, 1, 'Which verbs are not usually used in the present continuous tense?');
+
+INSERT INTO question (id, exercise_id, text) VALUES (3, 2, 'What did you do last weekend?');
+INSERT INTO question (id, exercise_id, text) VALUES (4, 2, 'What did you eat for breakfast this morning?');
+INSERT INTO question (id, exercise_id, text) VALUES (5, 2, 'Where did you go on vacation last year?');
+
+INSERT INTO question (id, exercise_id, text) VALUES (6, 3, 'What is the English word for "la comida"?');
+
+INSERT INTO question (id, exercise_id, text) VALUES (7, 4, 'Tell me about yourself.');
+INSERT INTO question (id, exercise_id, text) VALUES (8, 4, 'Why are you interested in this job?');
+INSERT INTO question (id, exercise_id, text) VALUES (9, 4, 'What are your greatest strengths and weaknesses?');
+INSERT INTO question (id, exercise_id, text) VALUES (10, 4, 'Can you give an example of a time when you overcame a challenge?');
+INSERT INTO question (id, exercise_id, text) VALUES (11, 4, 'Where do you see yourself in five years?');
+
+INSERT INTO question (id, exercise_id, text) VALUES (12, 5, 'Was ist eine höfliche Begrüßung im Deutschen?');
+INSERT INTO question (id, exercise_id, text) VALUES (13, 5, 'Wie antwortet man auf die Frage "Wie geht es Ihnen?"');
+INSERT INTO question (id, exercise_id, text) VALUES (14, 5, 'Wie stellt man sich auf Deutsch vor?');
+
+ALTER TABLE question ALTER COLUMN id RESTART WITH 15;
+
+
+-- answer
+-- INSERT INTO answer (is_correct, question_id, text) VALUES (1, 1, 'is running')
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (1, 1, true, 'is running');
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (2, 1, false, 'are running');
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (3, 1, false, 'am running');
+
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (4, 2, true, 'think');
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (5, 2, true, 'want');
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (6, 2, false, 'love');
+
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (7, 3, true, 'I visited my family.');
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (8, 3, false, 'I''m visiting my family.');
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (9, 3, false, 'I will visit my family.');
+
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (10, 4, true, 'the food');
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (11, 4, false, 'the drink');
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (12, 4, false, 'the music');
+
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (13, 5, true, 'I ate cereal for breakfast.');
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (14, 5, false, 'I eat cereal for breakfast.');
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (15, 5, false, 'I will eat cereal for breakfast.');
+
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (16, 6, true, 'I went to Hawaii on vacation last year.');
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (17, 6, false, 'I''m going to Hawaii on vacation next year.');
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (18, 6, false, 'I will go to Hawaii on vacation next year.');
+
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (19, 7, false, 'I was born in a small town in the midwest.');
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (20, 7, false, 'I graduated from XYZ University with a degree in computer science.');
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (21, 7, true, 'I have over five years of experience in software development.');
+
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (22, 8, false, 'I just need a job.');
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (23, 8, true, 'I am excited about the company culture and the opportunities for growth.');
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (24, 8, false, 'I heard the salary is good.');
+
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (25, 9, true, 'My greatest strength is my attention to detail. My greatest weakness is public speaking.');
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (26, 9, false, 'My greatest strength is my ability to multitask. My greatest weakness is that I am a perfectionist.');
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (27, 9, false, 'My greatest strength is my leadership skills. My greatest weakness is that I work too hard.');
+
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (28, 10, true, 'When I was working on a project for a client, the client requested changes that were outside the scope of the project. I had to work with the client to manage their expectations and negotiate a compromise.');
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (29, 10, false, 'When I was in college, I had a difficult time balancing my coursework and my social life. I had to learn how to manage my time better.');
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (30, 10, false, 'I have never faced a significant challenge in my professional life.');
+
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (31, 11, false, 'I see myself in a management position, leading a team of developers.');
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (32, 11, true, 'I see myself as a valuable contributor to the company, continuing to develop my skills and taking on new challenges.');
+
+
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (33, 12, true, 'Guten Tag!');
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (34, 12, false, 'Hallo!');
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (35, 12, false, 'Moin!');
+
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (36, 13, true, 'Mir geht es gut, danke!');
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (37, 13, false, 'Mir geht es schlecht, danke!');
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (38, 13, false, 'Mir geht es so lala.');
+
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (39, 14, true, 'Ich heiße [Name].');
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (40, 14, false, 'Ich bin [Name].');
+INSERT INTO answer (id, question_id, is_correct, text) VALUES (41, 14, false, 'Ich komme aus [Land].');
+
+ALTER TABLE answer ALTER COLUMN id RESTART WITH 42;
\ No newline at end of file

application/module-language-school/src/main/resources/application.properties

 server.port=5000
 
 spring.jpa.open-in-view=false
-spring.datasource.url=jdbc:h2:mem:social-network;MODE=PostgreSQL
+spring.h2.console.enabled=true
+spring.datasource.url=jdbc:h2:mem:school
 spring.datasource.driverClassName=org.h2.Driver
-spring.datasource.username=SedaQ-app
-spring.datasource.password=$argon2id$v=19$m=16,t=2,p=1$YmF0bWFuYmF0bWFu$MdHYB359HdivAb9J6CaILw
+spring.datasource.username=sa
 spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
 # showing SQL is generally good practice for running project locally to check whether there is not an issue with implementation of JPA methods.
 spring.jpa.show-sql=true

application/module-language-school/src/main/resources/drop.sql

+drop table if exists course cascade
+drop table if exists course_students cascade
+drop table if exists domain_user cascade
+drop table if exists lecture cascade
+drop table if exists lecture_students cascade
+drop table if exists user_course cascade
+drop table if exists user_language_proficiency cascade
\ No newline at end of file

application/module-language-school/src/main/resources/import.sql

+-- I add ids manually, so I can better see what data are related
+
+-- LANGUAGE
+-- 0 - english
+-- 1 - german
+-- 2 - spanish
+-- 3 - czech
+
+-- PROFICIENCY
+-- 0 - A1
+-- 1 - A2
+-- 2 - B1
+-- 3 - B2
+-- 4 - C1
+-- 5 - C2
+-- 6 - C1N
+-- 7 - C2N
+
+-- USER
+-- admin
+INSERT INTO domain_user (id, city, country, house_number, street, zip, email, first_name, last_name, password, user_type, username) VALUES (1, 'New York', 'USA', 123, 'Main Street', '10001', 'john.doe@example.com', 'John', 'Doe', 'password123', 'ADMIN', 'johndoe');
+INSERT INTO domain_user (id, city, country, house_number, street, zip, email, first_name, last_name, password, user_type, username) VALUES (2, 'Los Angeles', 'USA', 456, 'Broadway', '90012', 'jane.smith@example.com', 'Jane', 'Smith', 'password123', 'ADMIN', 'janesmith');
+-- lecturer
+INSERT INTO domain_user (id, city, country, house_number, street, zip, email, first_name, last_name, password, user_type, username) VALUES (3, 'Los Angeles', 'USA', 456, 'Hollywood Blvd', '90028', 'jane.smith@example.com', 'Jane', 'Smith', 'password123', 'LECTURER', 'janesmith');
+INSERT INTO domain_user (id, city, country, house_number, street, zip, email, first_name, last_name, password, user_type, username) VALUES (4, 'London', 'UK', 789, 'Baker St', 'NW1 6XE', 'michael.jones@example.com', 'Michael', 'Jones', 'password123', 'LECTURER', 'michaeljones');
+INSERT INTO domain_user (id, city, country, house_number, street, zip, email, first_name, last_name, password, user_type, username) VALUES (5, 'Paris', 'France', 456, 'Champs-Élysées', '75008', 'claire.dupont@example.com', 'Claire', 'Dupont', 'password123', 'LECTURER', 'clairedupont');
+INSERT INTO domain_user (id, city, country, house_number, street, zip, email, first_name, last_name, password, user_type, username) VALUES (6, 'Berlin', 'Germany', 123, 'Friedrichstrasse', '10117', 'max.mustermann@example.com', 'Max', 'Mustermann', 'password123', 'LECTURER', 'maxmustermann');
+
+-- student
+INSERT INTO domain_user (id, city, country, house_number, street, zip, email, first_name, last_name, password, user_type, username) VALUES (7, 'New York', 'USA', 100, 'Fifth Ave', '10019', 'samuel.smith@example.com', 'Samuel', 'Smith', 'password123', 'STUDENT', 'samuelsmith');
+INSERT INTO domain_user (id, city, country, house_number, street, zip, email, first_name, last_name, password, user_type, username) VALUES (8, 'Los Angeles', 'USA', 789, 'Sunset Blvd', '90046', 'jessica.nguyen@example.com', 'Jessica', 'Nguyen', 'password123', 'STUDENT', 'jessicanguyen');
+INSERT INTO domain_user (id, city, country, house_number, street, zip, email, first_name, last_name, password, user_type, username) VALUES (9, 'London', 'UK', 234, 'Oxford St', 'W1C 1JG', 'peter.hansen@example.com', 'Peter', 'Hansen', 'password123', 'STUDENT', 'peterhansen');
+INSERT INTO domain_user (id, city, country, house_number, street, zip, email, first_name, last_name, password, user_type, username) VALUES (10, 'Paris', 'France', 15, 'Rue de Rivoli', '75001', 'lucie.dupont@example.com', 'Lucie', 'Dupont', 'password123', 'STUDENT', 'luciedupont');
+INSERT INTO domain_user (id, city, country, house_number, street, zip, email, first_name, last_name, password, user_type, username) VALUES (11, 'Berlin', 'Germany', 45, 'Unter den Linden', '10117', 'hans.schmidt@example.com', 'Hans', 'Schmidt', 'password123', 'STUDENT', 'hansschmidt');
+INSERT INTO domain_user (id, city, country, house_number, street, zip, email, first_name, last_name, password, user_type, username) VALUES (12, 'New York', 'USA', 456, 'Broadway', '10003', 'emma.jones@example.com', 'Emma', 'Jones', 'password123', 'STUDENT', 'emmajones');
+INSERT INTO domain_user (id, city, country, house_number, street, zip, email, first_name, last_name, password, user_type, username) VALUES (13, 'London', 'UK', 22, 'Baker Street', 'W1U 3BW', 'oliver.smith@example.com', 'Oliver', 'Smith', 'password123', 'STUDENT', 'oliversmith');
+INSERT INTO domain_user (id, city, country, house_number, street, zip, email, first_name, last_name, password, user_type, username) VALUES (14, 'Madrid', 'Spain', 18, 'Calle Mayor', '28013', 'laura.garcia@example.com', 'Laura', 'Garcia', 'password123', 'STUDENT', 'lauragarcia');
+INSERT INTO domain_user (id, city, country, house_number, street, zip, email, first_name, last_name, password, user_type, username) VALUES (15, 'Berlin', 'Germany', 32, 'Torstrasse', '10119', 'felix.mueller@example.com', 'Felix', 'Mueller', 'password123', 'STUDENT', 'felixmueller');
+INSERT INTO domain_user (id, city, country, house_number, street, zip, email, first_name, last_name, password, user_type, username) VALUES (16, 'Paris', 'France', 5, 'Rue de Rivoli', '75001', 'emilie.dupont@example.com', 'Emilie', 'Dupont', 'password123', 'STUDENT', 'emiliedupont');
+INSERT INTO domain_user (id, city, country, house_number, street, zip, email, first_name, last_name, password, user_type, username) VALUES (17, 'Bratislava', 'Slovakia', 123, 'Main Street', '12345', 'pkovac@example.com', 'Peter', 'Kovac', 'password123', 'STUDENT', 'peterkovac');
+INSERT INTO domain_user (id, city, country, house_number, street, zip, email, first_name, last_name, password, user_type, username) VALUES (18, 'Brno', 'Czechia', 123, 'Main Street', '12345', 'prachar@example.com', 'David', 'Prachar', 'password123', 'STUDENT', 'davidprachar');
+
+ALTER TABLE domain_user ALTER COLUMN id RESTART WITH 19;
+
+
+-- language_proficiency
+INSERT INTO user_language_proficiency (user_id, language_proficiency_key, language_proficiency) VALUES (3, 0, 6);
+
+INSERT INTO user_language_proficiency (user_id, language_proficiency_key, language_proficiency) VALUES (4, 0, 7);
+INSERT INTO user_language_proficiency (user_id, language_proficiency_key, language_proficiency) VALUES (4, 2, 4);
+
+INSERT INTO user_language_proficiency (user_id, language_proficiency_key, language_proficiency) VALUES (5, 2, 5);
+INSERT INTO user_language_proficiency (user_id, language_proficiency_key, language_proficiency) VALUES (5, 3, 6);
+
+INSERT INTO user_language_proficiency (user_id, language_proficiency_key, language_proficiency) VALUES (6, 1, 7);
+
+INSERT INTO user_language_proficiency (user_id, language_proficiency_key, language_proficiency) VALUES (7, 0, 4);
+INSERT INTO user_language_proficiency (user_id, language_proficiency_key, language_proficiency) VALUES (8, 1, 3);
+INSERT INTO user_language_proficiency (user_id, language_proficiency_key, language_proficiency) VALUES (9, 0, 2);
+INSERT INTO user_language_proficiency (user_id, language_proficiency_key, language_proficiency) VALUES (10, 3, 4);
+INSERT INTO user_language_proficiency (user_id, language_proficiency_key, language_proficiency) VALUES (11, 3, 3);
+INSERT INTO user_language_proficiency (user_id, language_proficiency_key, language_proficiency) VALUES (12, 2, 1);
+INSERT INTO user_language_proficiency (user_id, language_proficiency_key, language_proficiency) VALUES (13, 2, 1);
+INSERT INTO user_language_proficiency (user_id, language_proficiency_key, language_proficiency) VALUES (14, 2, 1);
+INSERT INTO user_language_proficiency (user_id, language_proficiency_key, language_proficiency) VALUES (15, 1, 1);
+INSERT INTO user_language_proficiency (user_id, language_proficiency_key, language_proficiency) VALUES (16, 1, 1);
+INSERT INTO user_language_proficiency (user_id, language_proficiency_key, language_proficiency) VALUES (17, 1, 1);
+INSERT INTO user_language_proficiency (user_id, language_proficiency_key, language_proficiency) VALUES (18, 1, 1);
+
+-- COURSE
+INSERT INTO course (id, capacity, finished, language, name, proficiency) VALUES (1, 25, false, 'GERMAN', 'German for Beginners', 'A1');
+INSERT INTO course (id, capacity, finished, language, name, proficiency) VALUES (2, 25, false, 'ENGLISH', 'English A1', 'A1');
+INSERT INTO course (id, capacity, finished, language, name, proficiency) VALUES (3, 25, false, 'ENGLISH', 'English A2', 'A2');
+INSERT INTO course (id, capacity, finished, language, name, proficiency) VALUES (4, 25, false, 'ENGLISH', 'English B1', 'B1');
+INSERT INTO course (id, capacity, finished, language, name, proficiency) VALUES (5, 25, false, 'ENGLISH', 'English B2', 'B2');
+INSERT INTO course (id, capacity, finished, language, name, proficiency) VALUES (6, 25, false, 'SPANISH', 'Spanish B1', 'B1');
+
+ALTER TABLE course ALTER COLUMN id RESTART WITH 4;
+
+
+-- COURSE-USER
+INSERT INTO user_course (student_id, course_id) VALUES (8, 1);
+INSERT INTO user_course (student_id, course_id) VALUES (15, 1);
+INSERT INTO user_course (student_id, course_id) VALUES (16, 1);
+INSERT INTO user_course (student_id, course_id) VALUES (17, 1);
+INSERT INTO user_course (student_id, course_id) VALUES (18, 1);
+
+INSERT INTO user_course (student_id, course_id) VALUES (7, 2);
+
+INSERT INTO user_course (student_id, course_id) VALUES (7, 3);
+INSERT INTO user_course (student_id, course_id) VALUES (9, 3);
+
+INSERT INTO user_course (student_id, course_id) VALUES (7, 4);
+INSERT INTO user_course (student_id, course_id) VALUES (9, 4);
+
+INSERT INTO user_course (student_id, course_id) VALUES (7, 5);
+INSERT INTO user_course (student_id, course_id) VALUES (9, 5);
+
+
+
+
+-- LECTURE
+insert into lecture (id, capacity, course_id, lecture_from, lecture_to, lecturer_id, topic) values (1, 25, 1, '2023-05-02 10:00:00', '2023-05-02 12:00:00', 6, 'Introduction to course')
+insert into lecture (id, capacity, course_id, lecture_from, lecture_to, lecturer_id, topic) values (2, 25, 1, '2023-05-04 10:00:00', '2023-05-04 12:00:00', 6, 'Begrüßung und Vorstellung')
+insert into lecture (id, capacity, course_id, lecture_from, lecture_to, lecturer_id, topic) values (3, 25, 1, '2023-05-09 10:00:00', '2023-05-09 12:00:00', 6, 'Mein Wohnort und meine Wohnung')
+insert into lecture (id, capacity, course_id, lecture_from, lecture_to, lecturer_id, topic) values (4, 25, 1, '2023-05-11 10:00:00', '2023-05-11 12:00:00', 6, 'Essen und Trinken')
+insert into lecture (id, capacity, course_id, lecture_from, lecture_to, lecturer_id, topic) values (5, 25, 1, '2023-05-16 10:00:00', '2023-05-16 12:00:00', 6, 'Meine Familie und Freunde')
+
+insert into lecture (id, capacity, course_id, lecture_from, lecture_to, lecturer_id, topic) values (6, 25, 5, '2023-05-01 10:00:00', '2023-05-01 12:00:00', 3, 'Introduction to course')
+insert into lecture (id, capacity, course_id, lecture_from, lecture_to, lecturer_id, topic) values (7, 25, 5, '2023-05-06 10:00:00', '2023-05-06 12:00:00', 3, 'Repetition of english times')
+insert into lecture (id, capacity, course_id, lecture_from, lecture_to, lecturer_id, topic) values (8, 25, 5, '2023-05-08 10:00:00', '2023-05-08 12:00:00', 3, 'Food')
+insert into lecture (id, capacity, course_id, lecture_from, lecture_to, lecturer_id, topic) values (9, 25, 5, '2023-05-08 10:00:00', '2023-05-08 12:00:00', 3, 'School systems around the world')
+insert into lecture (id, capacity, course_id, lecture_from, lecture_to, lecturer_id, topic) values (10, 25, 5, '2023-05-15 10:00:00', '2023-05-15 12:00:00', 3, 'Interview questions')
+
+ALTER TABLE lecture ALTER COLUMN id RESTART WITH 10;
+
+
+-- lecture-user
+INSERT INTO lecture_students (students_id, lecture_id) VALUES (8, 1);
+INSERT INTO lecture_students (students_id, lecture_id) VALUES (15, 1);
+INSERT INTO lecture_students (students_id, lecture_id) VALUES (16, 1);
+INSERT INTO lecture_students (students_id, lecture_id) VALUES (17, 1);
+INSERT INTO lecture_students (students_id, lecture_id) VALUES (18, 1);
+
+INSERT INTO lecture_students (students_id, lecture_id) VALUES (7, 6);
+INSERT INTO lecture_students (students_id, lecture_id) VALUES (9, 6);
+INSERT INTO lecture_students (students_id, lecture_id) VALUES (7, 7);
+INSERT INTO lecture_students (students_id, lecture_id) VALUES (9, 7);
\ No newline at end of file