--------------------------------------------------------------
|                   meta_table_page_info                     |
--------------------------------------------------------------
| page_id |    page   | keyword_separator |        desc      |
--------------------------------------------------------------
|    1    | some_page |          ,        | some_description |
--------------------------------------------------------------

--------------------------
|        keywords        |
--------------------------
| keyword_id |  keyword  |
--------------------------
|     1      | keyword_1 |
|     2      | keyword_2 |
|     3      | keyword_3 |
--------------------------