text: CREATE TABLE IF NOT EXISTS projects (
      id_project INTEGER PRIMARY KEY AUTOINCREMENT,
      name VARCHAR(40),
      session_counter INTEGER DEFAULT 0,
      token VARCHAR(32),
      CONSTRAINT name_unique UNIQUE (name),
      CONSTRAINT token_unique UNIQUE (token)
  );
  
  CREATE TABLE IF NOT EXISTS sessions (
      id_session INTEGER PRIMARY KEY AUTOINCREMENT,
      session_index INTEGER NOT NULL,
      dt_start TIMESTAMP,
      dt_end TIMESTAMP,
      is_active BIT DEFAULT 1,
      host VARCHAR(30),
      is_favorite BIT DEFAULT 0,
      description VARCHAR(800),
      id_project INTEGER NOT NULL,
      FOREIGN KEY(id_project) REFERENCES projects(id_project)
  );
  
  CREATE TABLE IF NOT EXISTS epochs (
      id_epoch INTEGER PRIMARY KEY AUTOINCREMENT,
      epoch_index INTEGER NOT NULL,
      metrics VARCHAR(256) NOT NULL,
      time TIMESTAMP NOT NULL,
      id_session INTEGER NOT NULL,
      FOREIGN KEY(id_session) REFERENCES sessions(id_session)
  );