For Frontend practice

Frontend/1 het/backend/prisma/schema.prisma

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+generator client {
+  provider = "prisma-client-js"
+}
+
+datasource db {
+  provider = "postgresql"
+  url      = env("DATABASE_URL")
+}
+
+model User {
+  id           Int      @id @default(autoincrement())
+  name         String
+  email        String   @unique
+  passwordHash String
+  createdAt    DateTime @default(now())
+}
+
+model Category {
+  id        Int       @id @default(autoincrement())
+  name      String    @unique
+  slug      String    @unique
+  createdAt DateTime  @default(now())
+  products  Product[]
+}
+
+model Product {
+  id          Int         @id @default(autoincrement())
+  categoryId  Int
+  name        String      @unique
+  description String?
+  price       Decimal     @db.Decimal(10, 2)
+  imageUrl    String?
+  stock       Int         @default(0)
+  createdAt   DateTime    @default(now())
+  category    Category    @relation(fields: [categoryId], references: [id], onDelete: Restrict)
+  orderItems  OrderItem[]
+}
+
+model Order {
+  id            Int         @id @default(autoincrement())
+  customerName  String
+  customerEmail String
+  totalPrice    Decimal     @db.Decimal(10, 2)
+  createdAt     DateTime    @default(now())
+  items         OrderItem[]
+}
+
+model OrderItem {
+  id        Int     @id @default(autoincrement())
+  orderId   Int
+  productId Int
+  quantity  Int
+  unitPrice Decimal @db.Decimal(10, 2)
+  order     Order   @relation(fields: [orderId], references: [id], onDelete: Cascade)
+  product   Product @relation(fields: [productId], references: [id], onDelete: Restrict)
+}