+-----------+             +---------------+
      | category  |    .---+    | category_lang |
      |-----------|   /    |    +---------------+
  +-->|id         | <---+  +--o |category_id    |
  |   |title      |     |       |language_id    | o---+
  |   |description|    1:n      |name           |     |      +-------------+
  |   |status     |     |       +---------------+     .      | language    |
  |   |parent_id  | o---+                              \     +-------------+
  |   +-----------+                                     >--> |id           |
 1:n                                                   /     |lang         |
  |   +------------+                                  '      |status       |
  |   | product    |                                  |      +-------------+
  |   +------------+           +--------------+       |
  |   |id          | <---+     | product_lang |       |
  |   |price       |     |     +--------------+       |
  |   |quantity    |     +---o |product_id    |       |
  |   |...         |           |language_id   | o-----+
  +-o |category_id |           |name          |
      +------------+           +--------------+