diff --git a/prisma/migrations/20250704070342_add_relation_seller_in_quotation/migration.sql b/prisma/migrations/20250704070342_add_relation_seller_in_quotation/migration.sql
new file mode 100644
index 0000000..ef63931
--- /dev/null
+++ b/prisma/migrations/20250704070342_add_relation_seller_in_quotation/migration.sql
@@ -0,0 +1,5 @@
+-- AlterTable
+ALTER TABLE "Quotation" ADD COLUMN     "sellerId" TEXT;
+
+-- AddForeignKey
+ALTER TABLE "Quotation" ADD CONSTRAINT "Quotation_sellerId_fkey" FOREIGN KEY ("sellerId") REFERENCES "User"("id") ON DELETE CASCADE ON UPDATE CASCADE;
diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index 7639cf2..72b19a3 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -511,6 +511,7 @@ model User {
 
   contactName String?
   contactTel  String?
+  quotation   Quotation[]
 }
 
 model UserResponsibleArea {
@@ -1386,6 +1387,9 @@ model Quotation {
 
   invoice    Invoice[]
   creditNote CreditNote[]
+
+  seller   User?   @relation(fields: [sellerId], references: [id], onDelete: Cascade)
+  sellerId String?
 }
 
 model QuotationPaySplit {