diff --git a/ins_backend.sql b/ins_backend.sql
deleted file mode 100644
index 85f6376..0000000
--- a/ins_backend.sql
+++ /dev/null
@@ -1,205 +0,0 @@
--- phpMyAdmin SQL Dump
--- version 5.2.1deb1+deb12u1
--- https://www.phpmyadmin.net/
---
--- Host: localhost:3306
--- Generation Time: Dec 11, 2025 at 11:00 AM
--- Server version: 10.11.14-MariaDB-0+deb12u2
--- PHP Version: 8.2.29
-
-SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO";
-START TRANSACTION;
-SET time_zone = "+00:00";
-
-
-/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
-/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
-/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
-/*!40101 SET NAMES utf8mb4 */;
-
---
--- Database: `oac_ins`
---
-
--- --------------------------------------------------------
-
---
--- Table structure for table `infonames`
---
-
-CREATE TABLE `infonames` (
-  `id` int(11) NOT NULL,
-  `info` varchar(63) NOT NULL,
-  `tln_id` int(11) NOT NULL,
-  `uid` int(11) NOT NULL
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci;
-
--- --------------------------------------------------------
-
---
--- Table structure for table `records`
---
-
-CREATE TABLE `records` (
-  `id` int(11) NOT NULL,
-  `infoname_id` int(11) NOT NULL,
-  `subname_id` int(11) DEFAULT NULL,
-  `type` enum('A','AAAA','TXT','CNAME','MX','SRV','NS') NOT NULL,
-  `value` varchar(2048) NOT NULL,
-  `ttl` int(11) DEFAULT 3600,
-  `priority` int(11) DEFAULT NULL,
-  `port` int(11) DEFAULT NULL,
-  `weight` int(11) DEFAULT NULL
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci;
-
--- --------------------------------------------------------
-
---
--- Table structure for table `subnames`
---
-
-CREATE TABLE `subnames` (
-  `id` int(11) NOT NULL,
-  `name` varchar(63) NOT NULL,
-  `infoname_id` int(11) NOT NULL
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci;
-
--- --------------------------------------------------------
-
---
--- Table structure for table `tln`
---
-
-CREATE TABLE `tln` (
-  `id` int(11) NOT NULL,
-  `name` varchar(63) NOT NULL,
-  `info` text DEFAULT NULL,
-  `owner_id` int(11) DEFAULT NULL,
-  `is_public` tinyint(1) DEFAULT 1,
-  `allow_subdomains` tinyint(1) DEFAULT 1
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci;
-
--- --------------------------------------------------------
-
---
--- Table structure for table `users`
---
-
-CREATE TABLE `users` (
-  `id` int(11) NOT NULL,
-  `uid` varchar(36) NOT NULL,
-  `username` varchar(64) NOT NULL,
-  `password` varchar(255) NOT NULL
-) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci;
-
---
--- Indexes for dumped tables
---
-
---
--- Indexes for table `infonames`
---
-ALTER TABLE `infonames`
-  ADD PRIMARY KEY (`id`),
-  ADD KEY `tln_id` (`tln_id`),
-  ADD KEY `uid` (`uid`);
-
---
--- Indexes for table `records`
---
-ALTER TABLE `records`
-  ADD PRIMARY KEY (`id`),
-  ADD KEY `infoname_id` (`infoname_id`),
-  ADD KEY `subname_id` (`subname_id`);
-
---
--- Indexes for table `subnames`
---
-ALTER TABLE `subnames`
-  ADD PRIMARY KEY (`id`),
-  ADD KEY `infoname_id` (`infoname_id`);
-
---
--- Indexes for table `tln`
---
-ALTER TABLE `tln`
-  ADD PRIMARY KEY (`id`),
-  ADD UNIQUE KEY `name` (`name`),
-  ADD KEY `owner_id` (`owner_id`);
-
---
--- Indexes for table `users`
---
-ALTER TABLE `users`
-  ADD PRIMARY KEY (`id`),
-  ADD UNIQUE KEY `uid` (`uid`),
-  ADD UNIQUE KEY `username` (`username`);
-
---
--- AUTO_INCREMENT for dumped tables
---
-
---
--- AUTO_INCREMENT for table `infonames`
---
-ALTER TABLE `infonames`
-  MODIFY `id` int(11) NOT NULL AUTO_INCREMENT;
-
---
--- AUTO_INCREMENT for table `records`
---
-ALTER TABLE `records`
-  MODIFY `id` int(11) NOT NULL AUTO_INCREMENT;
-
---
--- AUTO_INCREMENT for table `subnames`
---
-ALTER TABLE `subnames`
-  MODIFY `id` int(11) NOT NULL AUTO_INCREMENT;
-
---
--- AUTO_INCREMENT for table `tln`
---
-ALTER TABLE `tln`
-  MODIFY `id` int(11) NOT NULL AUTO_INCREMENT;
-
---
--- AUTO_INCREMENT for table `users`
---
-ALTER TABLE `users`
-  MODIFY `id` int(11) NOT NULL AUTO_INCREMENT;
-
---
--- Constraints for dumped tables
---
-
---
--- Constraints for table `infonames`
---
-ALTER TABLE `infonames`
-  ADD CONSTRAINT `infonames_ibfk_1` FOREIGN KEY (`tln_id`) REFERENCES `tln` (`id`) ON DELETE CASCADE,
-  ADD CONSTRAINT `infonames_ibfk_2` FOREIGN KEY (`uid`) REFERENCES `users` (`id`) ON DELETE CASCADE;
-
---
--- Constraints for table `records`
---
-ALTER TABLE `records`
-  ADD CONSTRAINT `records_ibfk_1` FOREIGN KEY (`infoname_id`) REFERENCES `infonames` (`id`) ON DELETE CASCADE,
-  ADD CONSTRAINT `records_ibfk_2` FOREIGN KEY (`subname_id`) REFERENCES `subnames` (`id`) ON DELETE CASCADE;
-
---
--- Constraints for table `subnames`
---
-ALTER TABLE `subnames`
-  ADD CONSTRAINT `subnames_ibfk_1` FOREIGN KEY (`infoname_id`) REFERENCES `infonames` (`id`) ON DELETE CASCADE;
-
---
--- Constraints for table `tln`
---
-ALTER TABLE `tln`
-  ADD CONSTRAINT `tln_ibfk_1` FOREIGN KEY (`owner_id`) REFERENCES `users` (`id`) ON DELETE SET NULL;
-COMMIT;
-
-/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
-/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
-/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;