include updates crudely

backend/database/schema/beepzone-schema-dump.sql

@@ -2086,3 +2086,20 @@ CREATE TABLE `zones` (
 /*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
 /*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;
 
+ALTER TABLE `assets` ADD COLUMN `tag_generation_string` VARCHAR(255) DEFAULT NULL AFTER `asset_tag`;
+
+ALTER TABLE `assets` 
+ADD COLUMN `belongs_to_item` INT(11) DEFAULT NULL COMMENT 'References asset_numeric_id of parent asset' AFTER `asset_numeric_id`,
+ADD COLUMN `previously_was` INT(11) DEFAULT NULL COMMENT 'References asset_numeric_id of the asset this replaced' AFTER `belongs_to_item`;
+
+ALTER TABLE `assets`
+ADD KEY `idx_belongs_to` (`belongs_to_item`),
+ADD KEY `idx_previously_was` (`previously_was`);
+
+ALTER TABLE `assets`
+ADD CONSTRAINT `fk_assets_belongs_to` FOREIGN KEY (`belongs_to_item`) REFERENCES `assets` (`asset_numeric_id`) ON DELETE SET NULL,
+ADD CONSTRAINT `fk_assets_previously_was` FOREIGN KEY (`previously_was`) REFERENCES `assets` (`asset_numeric_id`) ON DELETE SET NULL;
+
+ALTER TABLE `zones` MODIFY `zone_code` VARCHAR(50) NOT NULL;
+
+ALTER TABLE `zones` ADD UNIQUE KEY `unique_zone_code` (`zone_code`);