Manual:Page moving

Moving a page causes the title>Special:MyLanguage/Manual:Page title|page title to change while the table>Special:MyLanguage/Manual:Page table#page_id|page id remains the same. If a man>Special:MyLanguage/Manual:Redirect|redirect is created under the moved page's former page title, it will have a new page id. Pages can be moved using Special:MovePage (SpecialMovepage.php) or   (ApiMove.php).

Moving a page, and then moving it again, can create double redirects.

Database
There are two possible kinds of page move man>Special:MyLanguage/Manual:Log actions|log actions: move and move_redir. The latter refers to a move over a redirect.

API
A page move api>Special:MyLanguage/API:Logevents|log event has a "move" sub-element, e.g.  

Hooks
Hooks that pertain to page moves are  (MovePageForm::doSubmit</>), <tvar|TitleMoveComplete></> (<tvar|moveTo>Title::moveTo</>), and <tvar|AbortMove></> (<tvar|isValidMoveOperation>Title::isValidMoveOperation</>).