diff --git a/README.md b/README.md
index f6948ad..5a83916 100644
--- a/README.md
+++ b/README.md
@@ -54,7 +54,7 @@ This project is a full-stack web application featuring:
 - 🛠️ **Admin Panel** - Manage tables, columns, and data through a beautiful UI
 - 📊 **Table Manager** - Create and drop tables with visual column definition
 - 🔧 **Column Manager** - Add, modify, and drop columns from existing tables
-- 🔒 **Constraint Manager** - Add and manage UNIQUE and CHECK constraints (API ready, UI in progress)
+- 🔒 **Constraint Manager** - Add and manage UNIQUE and CHECK constraints (fully implemented)
 - 📊 **SQL Query Interface** - Execute custom queries with safety validation
 - 🔒 **JWT Authentication** with secure session management
 - 📦 **DrizzleORM** - Support for PostgreSQL, MySQL, and SQLite
@@ -767,10 +767,9 @@ See [ROADMAP.md](ROADMAP.md) for planned features and improvements.
 - ✅ Table Manager - Create and drop tables with visual column builder
 - ✅ Column Manager - Add, modify, and drop columns from existing tables
 - ✅ Schema management interface for table and column operations
-- 🔄 Constraint Manager - Add and manage UNIQUE and CHECK constraints (API complete, UI in progress)
+- ✅ Constraint Manager - Add and manage UNIQUE and CHECK constraints (fully implemented)
 
 **Upcoming features:**
-- Complete constraint management UI
 - Visual database designer
 - Multi-database server connections
 - Advanced query builder
diff --git a/ROADMAP.md b/ROADMAP.md
index 0446461..860fa63 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -60,11 +60,11 @@ See `src/config/features.json` for the complete feature configuration.
   - [x] ✅ Create schema management interface
   - [x] ✅ Implement table creation/editing UI (API ready, UI implemented)
   - [x] ✅ Add column type management UI (API ready, UI implemented)
-  - [ ] Add data validation and constraints management 🏗️ **IN PROGRESS**
+  - [x] Add data validation and constraints management ✅ **COMPLETED**
     - [x] ✅ Implement constraints API (UNIQUE, CHECK constraints)
     - [x] ✅ Add constraint listing endpoint
     - [x] ✅ Add constraint creation/deletion endpoints
-    - [ ] Build constraints management UI
+    - [x] ✅ Build constraints management UI
     - [ ] Add PRIMARY KEY constraint support
     - [ ] Add DEFAULT value management
     - [ ] Add NOT NULL constraint management
diff --git a/TESTING.md b/TESTING.md
index 33b873f..03b4537 100644
--- a/TESTING.md
+++ b/TESTING.md
@@ -149,9 +149,9 @@ All tests verify that:
 | Feature Config | - | - | - | 40 | 40 |
 | Table Manager | 7 | 2 (2 skipped) | 3 | - | 12 |
 | Column Manager | 9 | 2 (2 skipped) | 3 | - | 14 |
-| Constraint Manager | 14 | 0 (UI pending) | 3 | 4 | 21 |
+| Constraint Manager | 14 | 3 (3 skipped) | 4 | 4 | 25 |
 | Admin Dashboard | - | 3 | 3 | - | 6 |
-| **Total** | **30** | **7** | **12** | **44** | **93** |
+| **Total** | **30** | **10** | **16** | **44** | **100** |
 
 ## Feature: Constraint Management Tests
 
@@ -186,6 +186,25 @@ Tests for the Constraint Management API endpoints (`/api/admin/constraints`):
 - Error handling for all CRUD operations
 - Support for UNIQUE and CHECK constraints
 
+### End-to-End Tests (Playwright UI Tests)
+
+#### 2. `tests/e2e/AdminDashboard.e2e.ts` - Constraints Manager UI
+
+**UI Tests:**
+- 🔄 Display Constraints tab (requires auth - skipped)
+- 🔄 Show table selector in Constraints Manager (requires auth - skipped)
+- 🔄 Open add constraint dialog (requires auth - skipped)
+
+**Security Tests:**
+- ✅ Blocks constraint API access without authentication
+
+**Note:** UI tests are skipped because they require an authenticated session. These can be enabled when a test authentication mechanism is implemented.
+
+**Components Implemented:**
+- ✅ `ConstraintManagerTab.tsx` - Main UI component for managing constraints
+- ✅ `ConstraintDialog.tsx` - Reusable dialog for add/delete constraint operations
+- ✅ Integration with admin dashboard navigation and handlers
+
 ### Unit Tests
 
 #### 2. `src/utils/featureConfig.test.ts`
@@ -269,4 +288,4 @@ When adding new features:
 
 **Last Updated:** January 2026
 **Test Framework:** Playwright + Vitest
-**Coverage Status:** ✅ API Validation | 🔄 UI Tests (partial - needs auth)
+**Coverage Status:** ✅ API Validation | 🔄 UI Tests (partial - needs auth) | ✅ Constraint Manager UI Complete
diff --git a/tests/e2e/AdminDashboard.e2e.ts b/tests/e2e/AdminDashboard.e2e.ts
index 0be4570..65a1b33 100644
--- a/tests/e2e/AdminDashboard.e2e.ts
+++ b/tests/e2e/AdminDashboard.e2e.ts
@@ -95,5 +95,44 @@ test.describe('Admin Dashboard', () => {
       
       expect(response.status()).toBe(401);
     });
+
+    test('should not allow constraint management without auth', async ({ page }) => {
+      const response = await page.request.get('/api/admin/constraints?tableName=test');
+      
+      expect(response.status()).toBe(401);
+    });
+  });
+
+  test.describe('Constraints Manager UI', () => {
+    test.skip('should display Constraints tab after login', async ({ page }) => {
+      // This test would require actual authentication
+      // Skipping for now as it needs a real admin user
+      
+      // await page.goto('/admin/dashboard');
+      // await expect(page.getByText('Constraints')).toBeVisible();
+    });
+
+    test.skip('should show table selector in Constraints Manager', async ({ page }) => {
+      // This test would require authentication
+      // Skipping for now
+      
+      // await page.goto('/admin/dashboard');
+      // await page.getByText('Constraints').click();
+      
+      // await expect(page.getByText(/select a table/i)).toBeVisible();
+    });
+
+    test.skip('should open add constraint dialog', async ({ page }) => {
+      // This test would require authentication
+      // Skipping for now
+      
+      // await page.goto('/admin/dashboard');
+      // await page.getByText('Constraints').click();
+      // Select a table first
+      // await page.getByRole('button', { name: /add constraint/i }).click();
+      
+      // await expect(page.getByText('Add Constraint')).toBeVisible();
+      // await expect(page.getByLabel(/constraint name/i)).toBeVisible();
+    });
   });
 });