Expose Field API storage backends.
An array describing the storage backends implemented by the module. The keys are storage backend names. To avoid name clashes, storage backend names should be prefixed with the name of the module that exposes them. The values are arrays describing the storage backend, with the following key/value pairs:
Note: this list is generated by pattern matching, so it may include some functions that are not actually implementations of this hook.
function hook_field_storage_info() {
return array(
'field_sql_storage' => array(
'label' => t('Default SQL storage'),
'description' => t('Stores fields in the local SQL database, using per-field tables.'),
'settings' => array(),
),
);
}