diff --git a/Configuration/Extbase/Persistence/Classes.php b/Configuration/Extbase/Persistence/Classes.php
new file mode 100644
index 00000000..ef7ade7b
--- /dev/null
+++ b/Configuration/Extbase/Persistence/Classes.php
@@ -0,0 +1,35 @@
+<?php
+declare(strict_types = 1);
+
+/*
+ * This file is part of the package t3g/blog.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE file that was distributed with this source code.
+ */
+
+return [
+    \T3G\AgencyPack\Blog\Domain\Model\Content::class => [
+        'tableName' => 'tt_content',
+    ],
+    \T3G\AgencyPack\Blog\Domain\Model\Post::class => [
+        'tableName' => 'pages',
+    ],
+    \T3G\AgencyPack\Blog\Domain\Model\Category::class => [
+        'tableName' => 'sys_category',
+    ],
+    \T3G\AgencyPack\Blog\Domain\Model\Comment::class => [
+        'tableName' => 'tx_blog_domain_model_comment',
+        'properties' => [
+            'post' => [
+                'fieldName' => 'parentid'
+            ],
+        ],
+    ],
+    \T3G\AgencyPack\Blog\Domain\Model\Tag::class => [
+        'tableName' => 'tx_blog_domain_model_tag',
+    ],
+    \T3G\AgencyPack\Blog\Domain\Model\Author::class => [
+        'tableName' => 'tx_blog_domain_model_author',
+    ],
+];
diff --git a/ext_typoscript_setup.txt b/ext_typoscript_setup.txt
index d4848433..89aaf5a3 100644
--- a/ext_typoscript_setup.txt
+++ b/ext_typoscript_setup.txt
@@ -6,40 +6,14 @@ plugin.tx_blog {
 
 config.tx_extbase.persistence {
     classes {
-        T3G\AgencyPack\Blog\Domain\Model\Content {
-            mapping {
-                tableName = tt_content
-            }
-        }
-        T3G\AgencyPack\Blog\Domain\Model\Post {
-            mapping {
-                tableName = pages
-                columns.crdate.mapOnProperty = crdate
-            }
-        }
-        T3G\AgencyPack\Blog\Domain\Model\Category {
-            mapping {
-                tableName = sys_category
-            }
-        }
         T3G\AgencyPack\Blog\Domain\Model\Comment {
             newRecordStoragePid = {$plugin.tx_blog.settings.storagePid}
-            mapping {
-                tableName = tx_blog_domain_model_comment
-                columns.parentid.mapOnProperty = post
-            }
         }
         T3G\AgencyPack\Blog\Domain\Model\Tag {
             newRecordStoragePid = {$plugin.tx_blog.settings.storagePid}
-            mapping {
-                tableName = tx_blog_domain_model_tag
-            }
         }
         T3G\AgencyPack\Blog\Domain\Model\Author {
             newRecordStoragePid = {$plugin.tx_blog.settings.storagePid}
-            mapping {
-                tableName = tx_blog_domain_model_author
-            }
         }
     }
 }