diff --git a/application/models/Admins_model.php b/application/models/Admins_model.php
index 34927213..bc041687 100644
--- a/application/models/Admins_model.php
+++ b/application/models/Admins_model.php
@@ -196,6 +196,9 @@ class Admins_model extends EA_Model {
         $settings = $admin['settings'];
         unset($admin['settings']);
 
+        $admin['create_datetime'] = date('Y-m-d H:i:s');
+        $admin['update_datetime'] = date('Y-m-d H:i:s');
+
         if ( ! $this->db->insert('users', $admin))
         {
             throw new RuntimeException('Could not insert admin.');
@@ -237,6 +240,8 @@ class Admins_model extends EA_Model {
             $settings['password'] = hash_password($existing_settings['salt'], $settings['password']);
         }
 
+        $admin['update_datetime'] = date('Y-m-d H:i:s');
+
         if ( ! $this->db->update('users', $admin, ['id' => $admin['id']]))
         {
             throw new RuntimeException('Could not update admin.');
diff --git a/application/models/Appointments_model.php b/application/models/Appointments_model.php
index 61c1f5ef..97115bea 100644
--- a/application/models/Appointments_model.php
+++ b/application/models/Appointments_model.php
@@ -175,6 +175,8 @@ class Appointments_model extends EA_Model {
     protected function insert(array $appointment): int
     {
         $appointment['book_datetime'] = date('Y-m-d H:i:s');
+        $appointment['create_datetime'] = date('Y-m-d H:i:s');
+        $appointment['update_datetime'] = date('Y-m-d H:i:s');
         $appointment['hash'] = random_string('alnum', 12);
 
         if ( ! $this->db->insert('appointments', $appointment))
@@ -196,6 +198,8 @@ class Appointments_model extends EA_Model {
      */
     protected function update(array $appointment): int
     {
+        $appointment['update_datetime'] = date('Y-m-d H:i:s');
+        
         if ( ! $this->db->update('appointments', $appointment, ['id' => $appointment['id']]))
         {
             throw new RuntimeException('Could not update appointment record.');
diff --git a/application/models/Categories_model.php b/application/models/Categories_model.php
index 1cc5511b..0467fe20 100644
--- a/application/models/Categories_model.php
+++ b/application/models/Categories_model.php
@@ -98,6 +98,9 @@ class Categories_model extends EA_Model {
      */
     protected function insert(array $category): int
     {
+        $category['create_datetime'] = date('Y-m-d H:i:s');
+        $category['update_datetime'] = date('Y-m-d H:i:s');
+        
         if ( ! $this->db->insert('categories', $category))
         {
             throw new RuntimeException('Could not insert category.');
@@ -117,6 +120,8 @@ class Categories_model extends EA_Model {
      */
     protected function update(array $category): int
     {
+        $category['update_datetime'] = date('Y-m-d H:i:s');
+        
         if ( ! $this->db->update('categories', $category, ['id' => $category['id']]))
         {
             throw new RuntimeException('Could not update service categories.');
diff --git a/application/models/Consents_model.php b/application/models/Consents_model.php
index 76b5b6bc..abfc64ec 100644
--- a/application/models/Consents_model.php
+++ b/application/models/Consents_model.php
@@ -82,8 +82,7 @@ class Consents_model extends EA_Model {
      */
     protected function insert(array $consent): int
     {
-        $consent['created'] = date('Y-m-d H:i:s');
-        $consent['modified'] = date('Y-m-d H:i:s');
+        $consent['update_datetime'] = date('Y-m-d H:i:s');
 
         if ( ! $this->db->insert('consents', $consent))
         {
@@ -104,7 +103,7 @@ class Consents_model extends EA_Model {
      */
     protected function update(array $consent): int
     {
-        $consent['modified'] = date('Y-m-d H:i:s');
+        $consent['update_datetime'] = date('Y-m-d H:i:s');
 
         if ( ! $this->db->update('consents', $consent, ['id' => $consent['id']]))
         {
diff --git a/application/models/Customers_model.php b/application/models/Customers_model.php
index 4417ae3a..f6f33cb2 100644
--- a/application/models/Customers_model.php
+++ b/application/models/Customers_model.php
@@ -157,6 +157,8 @@ class Customers_model extends EA_Model {
      */
     protected function insert(array $customer): int
     {
+        $customer['create_datetime'] = date('Y-m-d H:i:s');
+        $customer['update_datetime'] = date('Y-m-d H:i:s');
         $customer['id_roles'] = $this->get_customer_role_id();
 
         if ( ! $this->db->insert('users', $customer))
@@ -178,6 +180,8 @@ class Customers_model extends EA_Model {
      */
     protected function update(array $customer): int
     {
+        $customer['update_datetime'] = date('Y-m-d H:i:s');
+        
         if ( ! $this->db->update('users', $customer, ['id' => $customer['id']]))
         {
             throw new RuntimeException('Could not update customer.');
diff --git a/application/models/Providers_model.php b/application/models/Providers_model.php
index 1fa3d004..00977eb2 100755
--- a/application/models/Providers_model.php
+++ b/application/models/Providers_model.php
@@ -206,6 +206,8 @@ class Providers_model extends EA_Model {
      */
     protected function insert(array $provider): int
     {
+        $provider['create_datetime'] = date('Y-m-d H:i:s');
+        $provider['update_datetime'] = date('Y-m-d H:i:s');
         $provider['id_roles'] = $this->get_provider_role_id();
 
         $service_ids = $provider['services'];
@@ -240,6 +242,8 @@ class Providers_model extends EA_Model {
      */
     protected function update(array $provider): int
     {
+        $provider['update_datetime'] = date('Y-m-d H:i:s');
+        
         $service_ids = $provider['services'];
         unset($provider['services']);
 
diff --git a/application/models/Roles_model.php b/application/models/Roles_model.php
index 1f3ecdf1..32ebec3c 100644
--- a/application/models/Roles_model.php
+++ b/application/models/Roles_model.php
@@ -96,6 +96,9 @@ class Roles_model extends EA_Model {
      */
     protected function insert(array $role): int
     {
+        $role['create_datetime'] = date('Y-m-d H:i:s');
+        $role['update_datetime'] = date('Y-m-d H:i:s');
+        
         if ( ! $this->db->insert('roles', $role))
         {
             throw new RuntimeException('Could not insert role.');
@@ -115,6 +118,8 @@ class Roles_model extends EA_Model {
      */
     protected function update(array $role): int
     {
+        $role['update_datetime'] = date('Y-m-d H:i:s');
+        
         if ( ! $this->db->update('roles', $role, ['id' => $role['id']]))
         {
             throw new RuntimeException('Could not update role.');
diff --git a/application/models/Secretaries_model.php b/application/models/Secretaries_model.php
index 288a064b..299c7ac9 100644
--- a/application/models/Secretaries_model.php
+++ b/application/models/Secretaries_model.php
@@ -204,6 +204,9 @@ class Secretaries_model extends EA_Model {
      */
     protected function insert(array $secretary): int
     {
+        $secretary['create_datetime'] = date('Y-m-d H:i:s');
+        $secretary['update_datetime'] = date('Y-m-d H:i:s');
+        
         $secretary['id_roles'] = $this->get_secretary_role_id();
 
         $providers = $secretary['providers'] ?? [];
@@ -239,6 +242,8 @@ class Secretaries_model extends EA_Model {
      */
     protected function update(array $secretary): int
     {
+        $secretary['update_datetime'] = date('Y-m-d H:i:s');
+        
         $provider_ids = $secretary['providers'] ?? [];
         unset($secretary['providers']);
 
diff --git a/application/models/Services_model.php b/application/models/Services_model.php
index 47d83685..b7aaeff0 100644
--- a/application/models/Services_model.php
+++ b/application/models/Services_model.php
@@ -154,6 +154,9 @@ class Services_model extends EA_Model {
      */
     protected function insert(array $service): int
     {
+        $service['create_datetime'] = date('Y-m-d H:i:s');
+        $service['update_datetime'] = date('Y-m-d H:i:s');
+        
         if ( ! $this->db->insert('services', $service))
         {
             throw new RuntimeException('Could not insert service.');
@@ -173,6 +176,8 @@ class Services_model extends EA_Model {
      */
     protected function update(array $service): int
     {
+        $service['update_datetime'] = date('Y-m-d H:i:s');
+        
         if ( ! $this->db->update('services', $service, ['id' => $service['id']]))
         {
             throw new RuntimeException('Could not update service.');
diff --git a/application/models/Settings_model.php b/application/models/Settings_model.php
index 26f8120a..9d0c4651 100644
--- a/application/models/Settings_model.php
+++ b/application/models/Settings_model.php
@@ -97,6 +97,9 @@ class Settings_model extends EA_Model {
      */
     protected function insert(array $setting): int
     {
+        $setting['create_datetime'] = date('Y-m-d H:i:s');
+        $setting['update_datetime'] = date('Y-m-d H:i:s');
+        
         if ( ! $this->db->insert('settings', $setting))
         {
             throw new RuntimeException('Could not insert setting.');
@@ -116,6 +119,8 @@ class Settings_model extends EA_Model {
      */
     protected function update(array $setting): int
     {
+        $setting['update_datetime'] = date('Y-m-d H:i:s');
+        
         if ( ! $this->db->update('settings', $setting, ['id' => $setting['id']]))
         {
             throw new RuntimeException('Could not update setting.');
diff --git a/application/models/Unavailabilities_model.php b/application/models/Unavailabilities_model.php
index f2559b07..a560c4d9 100644
--- a/application/models/Unavailabilities_model.php
+++ b/application/models/Unavailabilities_model.php
@@ -129,6 +129,8 @@ class Unavailabilities_model extends EA_Model {
     protected function insert(array $unavailability): int
     {
         $unavailability['book_datetime'] = date('Y-m-d H:i:s');
+        $unavailability['create_datetime'] = date('Y-m-d H:i:s');
+        $unavailability['update_datetime'] = date('Y-m-d H:i:s');
         $unavailability['hash'] = random_string('alnum', 12);
         $unavailability['is_unavailability'] = TRUE;
 
@@ -151,6 +153,8 @@ class Unavailabilities_model extends EA_Model {
      */
     protected function update(array $unavailability): int
     {
+        $unavailability['update_datetime'] = date('Y-m-d H:i:s');
+        
         if ( ! $this->db->update('appointments', $unavailability, ['id' => $unavailability['id']]))
         {
             throw new RuntimeException('Could not update unavailability record.');
diff --git a/application/models/Users_model.php b/application/models/Users_model.php
index 36ee2c59..607cfe71 100644
--- a/application/models/Users_model.php
+++ b/application/models/Users_model.php
@@ -113,6 +113,9 @@ class Users_model extends EA_Model {
      */
     protected function insert(array $user): int
     {
+        $user['create_datetime'] = date('Y-m-d H:i:s');
+        $user['update_datetime'] = date('Y-m-d H:i:s');
+        
         $settings = $user['settings'];
         unset($user['settings']);
 
@@ -141,6 +144,8 @@ class Users_model extends EA_Model {
      */
     protected function update(array $user): int
     {
+        $user['update_datetime'] = date('Y-m-d H:i:s');
+        
         $settings = $user['settings'];
         unset($user['settings']);