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From Joomla! Documentation

Check-in/check-out

Joomla tables implement a simple mechanism for preventing a race condition while editing rows in a database. This depends on the existence of database fields called "checked_out" and "checked_out_time" and if these fields are present JTable will automatically support this mechanism so that it can be easily used in your tables too. In addition to the checkOut and checkIn methods, there is a isCheckedOut method to determine if a given table row is currently checked out by another user.


Chris Davenport 12:23, 17 April 2011 (CDT) Edit comment