Index: iknow-api/Migrations/20251027191028_dbRelations.cs
===================================================================
--- iknow-api/Migrations/20251027191028_dbRelations.cs	(revision b38c39caa5327b5c3dffc7da82ccae5b655835fa)
+++ iknow-api/Migrations/20251027191028_dbRelations.cs	(revision b38c39caa5327b5c3dffc7da82ccae5b655835fa)
@@ -0,0 +1,75 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace iknow_api.Migrations
+{
+    /// <inheritdoc />
+    public partial class dbRelations : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropIndex(
+                name: "IX_HighSchool_UserId",
+                table: "HighSchool");
+
+            migrationBuilder.DropIndex(
+                name: "IX_EnrollmentInfo_UserId",
+                table: "EnrollmentInfo");
+
+            migrationBuilder.DropIndex(
+                name: "IX_ContactInfo_UserId",
+                table: "ContactInfo");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_HighSchool_UserId",
+                table: "HighSchool",
+                column: "UserId",
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_EnrollmentInfo_UserId",
+                table: "EnrollmentInfo",
+                column: "UserId",
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ContactInfo_UserId",
+                table: "ContactInfo",
+                column: "UserId",
+                unique: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropIndex(
+                name: "IX_HighSchool_UserId",
+                table: "HighSchool");
+
+            migrationBuilder.DropIndex(
+                name: "IX_EnrollmentInfo_UserId",
+                table: "EnrollmentInfo");
+
+            migrationBuilder.DropIndex(
+                name: "IX_ContactInfo_UserId",
+                table: "ContactInfo");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_HighSchool_UserId",
+                table: "HighSchool",
+                column: "UserId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_EnrollmentInfo_UserId",
+                table: "EnrollmentInfo",
+                column: "UserId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ContactInfo_UserId",
+                table: "ContactInfo",
+                column: "UserId");
+        }
+    }
+}