Add all database tables with relations

software/backend/models/orders.model.ts

@@ -0,0 +1,20 @@
+import { Table, Column, Model, BelongsTo, ForeignKey, HasMany } from 'sequelize-typescript';
+import { Users } from './users.model';
+import { OrderedItem } from './orderedItem.model';
+
+@Table
+export class Orders extends Model {
+  @Column
+  @ForeignKey(() => Users)
+  userNameId: number
+
+  @Column
+  totalPrice: number
+
+  // Relations
+  @BelongsTo(() => Users)
+  user: Users
+
+  @HasMany(() => OrderedItem)
+  orderedItems: OrderedItem
+}