Title: codex Database Description
Last modified: August 18, 2016

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# codex Database Description

 *  [deko](https://wordpress.org/support/users/deko/)
 * (@deko)
 * [19 years, 2 months ago](https://wordpress.org/support/topic/codex-database-description/)
 * [http://codex.wordpress.org/Database_Description](http://codex.wordpress.org/Database_Description)
 * why are _parent fields in some tables (e.g. comments) listed as an FK to the 
   same table?

Viewing 1 replies (of 1 total)

 *  Thread Starter [deko](https://wordpress.org/support/users/deko/)
 * (@deko)
 * [19 years, 2 months ago](https://wordpress.org/support/topic/codex-database-description/#post-528249)
 * Actually, I think all FKs are irrelevant to MySql unless you are using the InnoDB
   database engine.

Viewing 1 replies (of 1 total)

The topic ‘codex Database Description’ is closed to new replies.

## Tags

 * [database](https://wordpress.org/support/topic-tag/database/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 1 reply
 * 1 participant
 * Last reply from: [deko](https://wordpress.org/support/users/deko/)
 * Last activity: [19 years, 2 months ago](https://wordpress.org/support/topic/codex-database-description/#post-528249)
 * Status: not resolved

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