backdrop_install_system in core/includes/install.inc

Installs the system module.

drupal_get_schema_versions in core/includes/drupal.inc

Returns an array of available schema versions for a module.

module_enable in core/includes/module.inc

Enables or installs a given list of modules.

system_install in core/modules/system/system.install

Implements hook_install().

system_requirements in core/modules/system/system.install

Implements hook_requirements().

UpdateDrupal7TestCase::testAvailableUpdates in core/modules/simpletest/tests/update.test

Tests that updates will be executed in the correct order.

update_get_update_function_list in core/includes/update.inc

Returns an organized list of update functions for a set of modules.

update_get_update_list in core/includes/update.inc

Returns a list of all the pending site updates.