database - Normalization a table -


i want normalize table 3nf

              -----------------------------------               |        |         |              |               |        v         v              v ---------------------------------------------------------------------------------------------------------- |user_name|post_id|post_title|post_text|post_submitted_time|comment_id|comment_text|submited_comment_time| ----------------------------------------------------------------------------------------------------------      |        |                                                  ^            ^                ^      |        |                                                  |            |                |      -------------------------------------------------------------------------------------------

how can work?

assuming user_name pk.

 ------------------------------------------------------------ |post_id|post_title|post_text|post_submitted_time|user_name| ------------------------------------------------------------      1      foo       bar          08:15             baz    ------------------------------------------------------------------ |comment_id|comment_text|submitted_comment_time|user_name|post_id| ------------------------------------------------------------------      1         blabla          13:37             anyname     1      2         foobar          13:38             anyname     1

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