To mantain updated the db with the auto-update feature.

This file is for mysql installations. Every DB must have
its own file.

diff --git a/backup/db/backup_mysql.php b/backup/db/backup_mysql.php
new file mode 100644 (file)
index 0000000..1b332cb
--- /dev/null
+++ b/backup/db/backup_mysql.php
@@ -0,0 +1,49 @@
+<?PHP  //$Id$
+//
+// This file keeps track of upgrades to Moodle's
+// backup/restore utility.
+// 
+// Sometimes, changes between versions involve 
+// alterations to database structures and other 
+// major things that may break installations.  
+//
+// The upgrade function in this file will attempt
+// to perform all the necessary actions to upgrade
+// your older installtion to the current version.
+//
+// If there's something it cannot do itself, it 
+// will tell you what you need to do.
+//
+// Versions are defined by backup_version.php
+//
+// This file is tailored to MySQL
+
+function backup_upgrade($oldversion=0) {
+
+    global $CFG;
+
+    $result = true;
+
+    if ($oldversion < 2003050300 and $result) {
+        $result = execute_sql("CREATE TABLE `{$CFG->prefix}backup_ids` (
+                        `backup_code` INT(12) UNSIGNED NOT NULL, 
+                        `table_name` VARCHAR(30) NOT NULL, 
+                        `old_id` INT(10) UNSIGNED NOT NULL, 
+                        `new_id` INT(10) UNSIGNED,
+                         PRIMARY KEY (`backup_code`, `table_name`, `old_id`)
+                     )
+                     COMMENT = 'To store and convert ids in backup/restore'");
+    }
+
+    if ($oldversion < 2003050301 and $result) {
+        $result = execute_sql("ALTER TABLE `{$CFG->prefix}backup_ids`
+                         ADD `time` INT(10) UNSIGNED");
+    } 
+
+
+    //Finally, return result
+    return $result;
+
+}
+
+?>