diff --git a/admin/schemas.php b/admin/schemas.php
index 4fc37b6..c5df84d 100644
--- a/admin/schemas.php
+++ b/admin/schemas.php
@@ -113,6 +113,23 @@ class admin_plugin_struct_schemas extends DokuWiki_Admin_Plugin {
             }
         }
 
+        // clear
+        if($table && $INPUT->bool('clear')) {
+            if($table != $INPUT->str('confirm_clear')) {
+                msg($this->getLang('clear_fail'), -1);
+            } else {
+                try {
+                    $schema = new Schema($table);
+                    $schema->clear();
+                    msg($this->getLang('clear_ok'), 1);
+                    touch(action_plugin_struct_cache::getSchemaRefreshFile());
+                    send_redirect(wl($ID, array('do' => 'admin', 'page' => 'struct_schemas'), true, '&'));
+                } catch(StructException $e) {
+                    msg(hsc($e->getMessage()), -1);
+                }
+            }
+        }
+
     }
 
     /**
@@ -204,12 +221,18 @@ class admin_plugin_struct_schemas extends DokuWiki_Admin_Plugin {
         $form->setHiddenField('page', 'struct_schemas');
         $form->setHiddenField('table', $schema->getTable());
 
+        $form->addFieldsetOpen($this->getLang('btn_delete'));
         $form->addHTML($this->locale_xhtml('delete_intro'));
-
-        $form->addFieldsetOpen($this->getLang('tab_delete'));
         $form->addTextInput('confirm', $this->getLang('del_confirm'));
         $form->addButton('delete', $this->getLang('btn_delete'));
         $form->addFieldsetClose();
+
+        $form->addFieldsetOpen($this->getLang('btn_clear'));
+        $form->addHTML($this->locale_xhtml('clear_intro'));
+        $form->addTextInput('confirm_clear', $this->getLang('clear_confirm'));
+        $form->addButton('clear', $this->getLang('btn_clear'));
+        $form->addFieldsetClose();
+
         return $form->toHTML();
     }
 
diff --git a/lang/de/clear_intro.txt b/lang/de/clear_intro.txt
new file mode 100644
index 0000000..b66f9a7
--- /dev/null
+++ b/lang/de/clear_intro.txt
@@ -0,0 +1 @@
+**ACHTUNG:** Hiermit werden **alle** Daten gelöscht, die jemals für dieses Schema gespeichert waren. Es gibt kein Zurück!
diff --git a/lang/de/delete_intro.txt b/lang/de/delete_intro.txt
new file mode 100644
index 0000000..5d53247
--- /dev/null
+++ b/lang/de/delete_intro.txt
@@ -0,0 +1 @@
+**ACHTUNG:** Hiermit wird die Definition des Schemas gelöscht und **alle** Daten, die jemals für dieses Schema gespeichert waren. Es gibt kein Zurück!
diff --git a/lang/de/lang.php b/lang/de/lang.php
index 0e9116f..60eca3a 100644
--- a/lang/de/lang.php
+++ b/lang/de/lang.php
@@ -18,4 +18,15 @@ $lang['summary']               = 'Struct-Daten geändert';
 $lang['export']                = 'Schema als JSON exportieren';
 $lang['btn_export']            = 'Exportieren';
 
+$lang['del_confirm'] = 'Namen des Schema zur Bestätigung der Löschung eingeben';
+$lang['del_fail'] = 'Die Schemanamen stimmten nicht überein. Schema nicht gelöscht';
+$lang['del_ok'] = 'Schema wurde gelöscht';
+$lang['btn_delete'] = 'Löschen';
 $lang['js']['confirmAssignmentsDelete'] = 'Wollen Sie wirklich die Zuweisung von Schma "{0}" zu Seite/Namensraum "{1}" löschen?';
+
+$lang['clear_confirm'] = 'Namen des Schema zur Bestätigung der Entfernung aller Daten eingeben';
+$lang['clear_fail'] = 'Die Schemanamen stimmten nicht überein. Daten wurden nicht entfernt';
+$lang['clear_ok'] = 'Die Daten des Schemas wurden entfernt';
+$lang['btn_clear'] = 'Leeren';
+
+$lang['tab_delete'] = 'Löschen/Leeren';
diff --git a/lang/en/clear_intro.txt b/lang/en/clear_intro.txt
new file mode 100644
index 0000000..5abfe71
--- /dev/null
+++ b/lang/en/clear_intro.txt
@@ -0,0 +1 @@
+**WARNING:** This will clear **all** data that has ever been saved for this schema! There is no going back!
diff --git a/lang/en/lang.php b/lang/en/lang.php
index 5a30051..f88bb40 100644
--- a/lang/en/lang.php
+++ b/lang/en/lang.php
@@ -36,9 +36,14 @@ $lang['del_ok'] = 'Schema has been deleted';
 $lang['btn_delete'] = 'Delete';
 $lang['js']['confirmAssignmentsDelete'] = 'Do you really want to delete the assignment of schema "{0}" to page/namespace "{1}"?';
 
+$lang['clear_confirm'] = 'Enter schema name to confirm clearing all data';
+$lang['clear_fail'] = 'Schema names did not match. Data not deleted';
+$lang['clear_ok'] = 'Data of schema has been deleted';
+$lang['btn_clear'] = 'Clear';
+
 $lang['tab_edit'] = 'Edit Schema';
 $lang['tab_export'] = 'Import/Export';
-$lang['tab_delete'] = 'Delete';
+$lang['tab_delete'] = 'Delete/Clear';
 
 $lang['editor_sort'] = 'Sort';
 $lang['editor_label'] = 'Field Name';
diff --git a/meta/Schema.php b/meta/Schema.php
index 0bf427c..05888cd 100644
--- a/meta/Schema.php
+++ b/meta/Schema.php
@@ -252,6 +252,21 @@ class Schema {
         $this->ts = 0;
     }
 
+
+    /**
+     * Clear all data of a schema, but retain the schema itself
+     */
+    public function clear() {
+        if(!$this->id) throw new StructException('can not clear data of unsaved schema');
+
+        $this->sqlite->query('BEGIN TRANSACTION');
+        $sql = 'DELETE FROM ?';
+        $this->sqlite->query($sql, 'data_' . $this->table);
+        $this->sqlite->query($sql, 'multi_' . $this->table);
+        $this->sqlite->query('COMMIT TRANSACTION');
+        $this->sqlite->query('VACUUM');
+    }
+
     /**
      * @return string
      */
diff --git a/style.less b/style.less
index c5fd1b6..3e79d9a 100644
--- a/style.less
+++ b/style.less
@@ -144,6 +144,7 @@
 
     fieldset {
         margin-bottom: 1em;
+        width: 500px;
     }
 }