am 938e8b67: am d731c902: am f0380a26: am 343f581d: Merge "fix typo and clarify class references in database lesson bug: 9372560" into jb-mr1.1-ub-dev

* commit '938e8b67c2c9d0e4c797a317a10148be42aa80ec':
  fix typo and clarify class references in database lesson bug: 9372560