code: func Connect(connectionString string) (*Database, error) {
  	var e error
  	db := new(Database)
  	if db.db, e = sql.Open("postgres", connectionString); e != nil {
  		return nil, e
  	}
  
  	// Ping the database to see if the connection is real
  	if e = db.DB().Ping(); e != nil {
  		return nil, errors.New("Connection failed. Unable to ping the DB: " + e.Error())
  	}
  
  	db.connectionString = connectionString
  	db.clear()
  	return db, nil
  }
docs: // Connect opens the connection to PostgreSQL using connectionString