It contains helper functions for common update tasks, such as renaming variables, installing and reverting features, granting and revoking permissions, deleting and altering CCK fields, changing content type information like Title label, etc.

Each hook_update_N() function returns an array with the results of the calls to update_sql(). Every function in update_api works in much the same way, passing by reference the $ret array as an argument and reporting each update and error encountered.

The API extends the toolset for maintaining site updates by offering functions for common update tasks and complex operations.

Installation:

Unpack in your modules folder (usually '/sites/all/modules/')
Enable under Administer > Site Building > Modules

Requirements:

· Drupal 6.x