Add all database tables with relations

software/backend/models/categories.model.ts

@@ -1,7 +1,14 @@
-import { Table, Column, Model, PrimaryKey, AutoIncrement } from 'sequelize-typescript';
+import { Table, Column, Model, BelongsTo, ForeignKey } from 'sequelize-typescript';
+import { Products } from './products.model';
 
 @Table
 export class Categories extends Model {
   @Column
   name: string
+
+  @ForeignKey(() => Products)
+  productId: number
+
+  @BelongsTo(() => Products)
+  product: Products
 }

software/backend/models/orderedItem.model.ts

@@ -0,0 +1,27 @@
+import { Table, Column, Model, BelongsTo, ForeignKey, HasMany } from 'sequelize-typescript';
+import { Orders } from './orders.model';
+import { Products } from './products.model';
+
+@Table
+export class OrderedItem extends Model {
+  @Column
+  @ForeignKey(() => Orders)
+  orderId: number
+
+  @Column
+  @ForeignKey(() => Products)
+  productId: number
+
+  @Column
+  quantity: number
+
+  @Column
+  totalPrice: number
+
+  // Relations
+  @BelongsTo(() => Orders)
+  order: Orders
+
+  @HasMany(() => Products)
+  products: Products[]
+}

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
+}

software/backend/models/products.model.ts

@@ -0,0 +1,30 @@
+import { Table, Column, Model, ForeignKey, BelongsTo, HasOne } from 'sequelize-typescript';
+import { Categories } from './categories.model';
+import { OrderedItem } from './orderedItem.model';
+
+@Table
+export class Products extends Model {
+  @Column
+  name: string
+
+  @Column
+  @ForeignKey(() => Categories)
+  categoryId: number
+
+  @Column
+  @ForeignKey(() => OrderedItem)
+  orderedItemId: number
+
+  @Column
+  price: number
+
+  @Column
+  discount: number
+  
+  // Relations
+  @BelongsTo(() => OrderedItem)
+  orderedItem: OrderedItem
+
+  @HasOne(() => Categories)
+  category: Categories
+}

software/backend/models/users.model.ts

@@ -0,0 +1,24 @@
+import { Table, Column, Model, HasMany } from 'sequelize-typescript';
+import { Orders } from './orders.model';
+
+@Table
+export class Users extends Model {
+  @Column
+  username: string
+
+  @Column
+  password: string
+
+  @Column
+  address: string
+
+  @Column
+  firstName: string
+
+  @Column
+  lastName: string
+
+  // Relations
+  @HasMany(() => Orders)
+  orders: Orders[]
+}