diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index e877d02..93a2f6e 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -161,6 +161,8 @@ model Payment {
   createdAt   DateTime      @default(now()) @map("created_at")
   
   user        User          @relation(fields: [userId], references: [id], onDelete: Cascade)
+  plan        Plan?         @relation(fields: [planId], references: [id], onDelete: SetNull)
+  course      Course?       @relation(fields: [courseId], references: [id], onDelete: SetNull)
 
   @@map("payments")
 }
@@ -174,6 +176,18 @@ model WebhookLog {
   @@map("webhook_logs")
 }
 
+model Notification {
+  id        String   @id @default(uuid())
+  userId    String   @map("user_id") // Can be 'ALL' for system wide
+  title     String
+  message   String   @db.Text
+  type      String   @default("info") // 'info', 'success', 'warning', 'error'
+  read      Boolean  @default(false)
+  createdAt DateTime @default(now()) @map("created_at")
+
+  @@map("notifications")
+}
+
 model ModuleActivity {
   id        String   @id @default(uuid())
   moduleId  String   @unique @map("module_id")
diff --git a/server.ts b/server.ts
index 8f594e0..0c11300 100644
--- a/server.ts
+++ b/server.ts
@@ -508,7 +508,7 @@ app.post('/api/courses/:id/unlock', authenticateToken, checkoutRateLimiter, asyn
       pixData = await AsaasService.getPixQrCode(asaasPayment.id);
     }
 
-    const newPayment = await prisma.subscriptionPayment.create({
+    const newPayment = await prisma.payment.create({
       data: {
         id: asaasPayment.id,
         userId: userId,
@@ -628,7 +628,7 @@ app.get('/api/subscription/status', authenticateToken, async (req: Authenticated
     return;
   }
 
-  const payments = await prisma.subscriptionPayment.findMany({
+  const payments = await prisma.payment.findMany({
     where: { userId },
     orderBy: { createdAt: 'desc' }
   });
@@ -731,7 +731,7 @@ app.post('/api/subscription/subscribe', authenticateToken, async (req: Authentic
        asaasDueDate = payment.dueDate || asaasDueDate;
     }
 
-    const newPayment = await prisma.subscriptionPayment.create({
+    const newPayment = await prisma.payment.create({
       data: {
         id: asaasPaymentId,
         userId: userId,
@@ -791,7 +791,7 @@ app.get('/api/admin/dashboard', authenticateToken, requireAdmin, async (req: Aut
 
   const activeUsersIds = users.filter(u => u.subscriptionStatus === 'ACTIVE').map(u => u.id);
   
-  const allPayments = await prisma.subscriptionPayment.findMany({
+  const allPayments = await prisma.payment.findMany({
     include: {
       user: true,
       course: true,
@@ -883,7 +883,7 @@ app.get('/api/admin/dashboard', authenticateToken, requireAdmin, async (req: Aut
       };
     });
 
-  const webhookLogs = await prisma.notification.findMany({
+  const webhookLogs = await prisma.webhookLog.findMany({
     orderBy: { createdAt: 'desc' },
     take: 15
   });
@@ -1416,11 +1416,11 @@ app.post('/api/webhooks/asaas', async (req: Request, res: Response) => {
                       isRefunded ? 'REFUNDED' : 
                       event === 'PAYMENT_RESTORED' ? 'PENDING' : null;
 
-    let existingPayment = await prisma.subscriptionPayment.findUnique({ where: { id: payment.id } });
+    let existingPayment = await prisma.payment.findUnique({ where: { id: payment.id } });
 
     if (existingPayment) {
       if (newStatus) {
-        await prisma.subscriptionPayment.update({
+        await prisma.payment.update({
           where: { id: payment.id },
           data: {
             status: newStatus as any,
@@ -1429,12 +1429,12 @@ app.post('/api/webhooks/asaas', async (req: Request, res: Response) => {
         });
       }
     } else if (!isRefunded) {
-      const lastPayment = await prisma.subscriptionPayment.findFirst({
+      const lastPayment = await prisma.payment.findFirst({
         where: { userId: user.id },
         orderBy: { createdAt: 'desc' }
       });
       
-      await prisma.subscriptionPayment.create({
+      await prisma.payment.create({
         data: {
           id: payment.id,
           userId: user.id,