text: use package_server;
  
  CREATE TABLE users (
      id INT PRIMARY KEY AUTO_INCREMENT,
      username VARCHAR(30) NOT NULL
  );
  
  CREATE TABLE packages(
      owner_id INT NOT NULL,
      name VARCHAR(100) NOT NULL,
      version VARCHAR(50) NOT NULL,
      object_store_id VARCHAR(300) NOT NULL,
      created TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
      PRIMARY KEY (owner_id, name, version),
      FOREIGN KEY (owner_id)
          REFERENCES users(id)
          ON DELETE CASCADE
  );