diff --git a/prisma/migrations/20221129041646_add_on_delete_to_all_relations/migration.sql b/prisma/migrations/20221129041646_add_on_delete_to_all_relations/migration.sql
new file mode 100644
index 0000000..1f7d4cc
--- /dev/null
+++ b/prisma/migrations/20221129041646_add_on_delete_to_all_relations/migration.sql
@@ -0,0 +1,26 @@
+-- DropForeignKey
+ALTER TABLE "InvisibleImage" DROP CONSTRAINT "InvisibleImage_imageId_fkey";
+
+-- DropForeignKey
+ALTER TABLE "InvisibleUrl" DROP CONSTRAINT "InvisibleUrl_urlId_fkey";
+
+-- DropForeignKey
+ALTER TABLE "Invite" DROP CONSTRAINT "Invite_createdById_fkey";
+
+-- DropForeignKey
+ALTER TABLE "Url" DROP CONSTRAINT "Url_userId_fkey";
+
+-- AlterTable
+ALTER TABLE "Url" ALTER COLUMN "userId" DROP NOT NULL;
+
+-- AddForeignKey
+ALTER TABLE "InvisibleImage" ADD CONSTRAINT "InvisibleImage_imageId_fkey" FOREIGN KEY ("imageId") REFERENCES "Image"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "Url" ADD CONSTRAINT "Url_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User"("id") ON DELETE SET NULL ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "InvisibleUrl" ADD CONSTRAINT "InvisibleUrl_urlId_fkey" FOREIGN KEY ("urlId") REFERENCES "Url"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "Invite" ADD CONSTRAINT "Invite_createdById_fkey" FOREIGN KEY ("createdById") REFERENCES "User"("id") ON DELETE CASCADE ON UPDATE CASCADE;
diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index 8c5bf4e..668af1a 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -56,7 +56,7 @@ model InvisibleImage {
   id      Int    @id @default(autoincrement())
   invis   String @unique
   imageId Int    @unique
-  image   Image  @relation(fields: [imageId], references: [id])
+  image   Image  @relation(fields: [imageId], references: [id], onDelete: Cascade)
 }
 
 model Url {
@@ -67,15 +67,15 @@ model Url {
   maxViews    Int?
   views       Int           @default(0)
   invisible   InvisibleUrl?
-  user        User          @relation(fields: [userId], references: [id])
-  userId      Int
+  user        User?         @relation(fields: [userId], references: [id], onDelete: SetNull)
+  userId      Int?
 }
 
 model InvisibleUrl {
   id    Int    @id @default(autoincrement())
   invis String @unique
   urlId String @unique
-  url   Url    @relation(fields: [urlId], references: [id])
+  url   Url    @relation(fields: [urlId], references: [id], onDelete: Cascade)
 }
 
 model Stats {
@@ -90,7 +90,7 @@ model Invite {
   created_at  DateTime  @default(now())
   expires_at  DateTime?
   used        Boolean   @default(false)
-  createdBy   User      @relation(fields: [createdById], references: [id])
+  createdBy   User      @relation(fields: [createdById], references: [id], onDelete: Cascade)
   createdById Int
 }