feat: add SQL schema

sql_data/schema.sql

@@ -0,0 +1,84 @@
+CREATE TABLE users (
+  id BIGINT AUTO_INCREMENT,
+  first_name VARCHAR(25),
+  last_name VARCHAR(50),
+  username VARCHAR(25) NOT NULL UNIQUE,
+  user_password VARCHAR(255),
+  email VARCHAR(50) NOT NULL UNIQUE,
+  user_role VARCHAR(15) NOT NULL,
+  user_description VARCHAR(1000),
+  PRIMARY KEY (id)
+);
+
+CREATE TABLE phone (
+  phone_number VARCHAR(15),
+  user_id BIGINT NOT NULL,
+  phone_type VARCHAR(25),
+  PRIMARY KEY (phone_number),
+  FOREIGN KEY (user_id) REFERENCES users(id)
+);
+
+CREATE TABLE specializations (
+  id INT AUTO_INCREMENT,
+  scope VARCHAR(20) NOT NULL,
+  details VARCHAR(50) NOT NULL,
+  PRIMARY KEY (id)
+);
+
+CREATE TABLE addresses (
+  id BIGINT AUTO_INCREMENT,
+  user_id BIGINT NOT NULL,
+  street VARCHAR(50) NOT NULL,
+  building VARCHAR(15) NOT NULL,
+  apartment VARCHAR(10),
+  postal_code VARCHAR(6) NOT NULL,
+  city VARCHAR(50) NOT NULL,
+  country_state VARCHAR(25) NOT NULL,
+  country VARCHAR(50) NOT NULL,
+  additional_info VARCHAR(1000),
+  PRIMARY KEY (id),
+  FOREIGN KEY (user_id) REFERENCES users(id)
+);
+
+CREATE TABLE users_specializations (
+  id BIGINT AUTO_INCREMENT,
+  user_id BIGINT NOT NULL,
+  specialization_id INT NOT NULL,
+  PRIMARY KEY (id),
+  FOREIGN KEY (user_id) REFERENCES users(id),
+  FOREIGN KEY (specialization_id) REFERENCES specializations(id)
+);
+
+CREATE TABLE organizers (
+  id BIGINT AUTO_INCREMENT,
+  address_id BIGINT NOT NULL,
+  user_id BIGINT NOT NULL,
+  title VARCHAR(50),
+  PRIMARY KEY (id),
+  FOREIGN KEY (address_id) REFERENCES addresses(id),
+  FOREIGN KEY (user_id) REFERENCES users(id)
+);
+
+CREATE TABLE visits (
+  id BIGINT AUTO_INCREMENT,
+  user_id BIGINT NOT NULL,
+  organizer_id BIGINT NOT NULL,
+  visit_date TIMESTAMP NOT NULL,
+  duration int NOT NULL,
+  visit_type VARCHAR(20) NOT NULL,
+  PRIMARY KEY (id),
+  FOREIGN KEY (user_id) REFERENCES users(id),
+  FOREIGN KEY (organizer_id) REFERENCES organizers(id)
+);
+
+CREATE TABLE working_hours (
+  id BIGINT AUTO_INCREMENT,
+  organizer_id BIGINT NOT NULL,
+  day DATE NOT NULL,
+  start_hour TIME NOT NULL,
+  end_hour TIME NOT NULL,
+  lunch_start TIME,
+  lunch_duration INT,
+  PRIMARY KEY (id),
+  FOREIGN KEY (organizer_id) REFERENCES organizers(id)
+)