[wp-trac] [WordPress Trac] #33514: Update x Upgrade database

[WordPress Trac]

#33514: Update x Upgrade database
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 Reporter:  pavelevap     |       Owner:
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  4.4
Component:  I18N          |     Version:
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:  multisite
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Comment (by dd32):

 The verbiage we mostly use is, `Update` means a filesystem change,
 `Upgrade` means a database change.

 Of course, it's actually `WP_Upgrader` which does filesystem changes :)
 but `upgrade.php` contains database-upgrade routines.

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Ticket URL: <https://core.trac.wordpress.org/ticket/33514#comment:2>
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