diff --git a/database/entity/Member.ts b/database/entity/Member.ts
index 246c320..31492d1 100644
--- a/database/entity/Member.ts
+++ b/database/entity/Member.ts
@@ -1,4 +1,14 @@
-import {Entity, PrimaryGeneratedColumn, Column, CreateDateColumn, UpdateDateColumn, Unique} from "typeorm"
+import {
+    Entity,
+    PrimaryGeneratedColumn,
+    Column,
+    CreateDateColumn,
+    UpdateDateColumn,
+    Unique,
+    ManyToOne,
+    JoinColumn
+} from "typeorm"
+import {System} from "./System";
 
 @Entity({name: "Member", synchronize: true})
 @Unique("UQ_Member_userid_name", ['userid', 'name'])
@@ -10,6 +20,10 @@ export class Member {
     @Column()
     userid: string
 
+    @ManyToOne(() => System, (system) => system.id, {eager: true, orphanedRowAction: "delete"})
+    @JoinColumn({ name: "systemid" })
+    system: System
+
     @Column({
         length: 100
     })
diff --git a/database/migrations/1773756156389-update.ts b/database/migrations/1773756156389-update.ts
new file mode 100644
index 0000000..fb2c8d0
--- /dev/null
+++ b/database/migrations/1773756156389-update.ts
@@ -0,0 +1,16 @@
+import { MigrationInterface, QueryRunner } from "typeorm";
+
+export class Update1773756156389 implements MigrationInterface {
+    name = 'Update1773756156389'
+
+    public async up(queryRunner: QueryRunner): Promise<void> {
+        await queryRunner.query(`ALTER TABLE "Member" ADD "systemid" integer`);
+        await queryRunner.query(`ALTER TABLE "Member" ADD CONSTRAINT "FK_Member_System" FOREIGN KEY ("systemid") REFERENCES "System"("id") ON DELETE NO ACTION ON UPDATE NO ACTION`);
+    }
+
+    public async down(queryRunner: QueryRunner): Promise<void> {
+        await queryRunner.query(`ALTER TABLE "Member" DROP CONSTRAINT "FK_Member_System"`);
+        await queryRunner.query(`ALTER TABLE "Member" DROP COLUMN "systemid"`);
+    }
+
+}
diff --git a/package.json b/package.json
index f1ad708..89d81db 100644
--- a/package.json
+++ b/package.json
@@ -36,7 +36,8 @@
     "test": "jest",
     "start": "ts-node src/bot.js",
     "new-migration": "typeorm-ts-node-commonjs migration:create database/migrations/update",
-    "generate-db": "typeorm-ts-node-commonjs migration:generate -d database/data-source.ts database/migrations/update",
+    "revert-migration": "typeorm-ts-node-commonjs migration:revert -d database/data-source.ts",
+    "generate-migration": "typeorm-ts-node-commonjs migration:generate -d database/data-source.ts database/migrations/update",
     "run-migration": "typeorm-ts-node-commonjs migration:run -d database/data-source.ts"
   }
 }