title: How to use a module that is outside of "GOPATH" in another module?
body: <p>I've created a library as the module for personal use outside of "GOPATH" in "database" folder with this command "go mod init database," and I don't know:</p>
  
  <ul>
  <li>How to use/<strong>import</strong> this module in another module?</li>
  </ul>
  
  <p>OS: <strong>Windows 7</strong>, Go: <strong>v1.11</strong></p>