diff --git a/lib/Db/Card.php b/lib/Db/Card.php
index fe91387ae..9a6954239 100644
--- a/lib/Db/Card.php
+++ b/lib/Db/Card.php
@@ -28,6 +28,8 @@ use DateTimeZone;
 use Sabre\VObject\Component\VCalendar;
 
 class Card extends RelationalEntity {
+	public const TITLE_MAX_LENGTH = 255;
+
 	protected $title;
 	protected $description;
 	protected $descriptionPrev;
diff --git a/lib/Migration/Version1000Date20200306161713.php b/lib/Migration/Version1000Date20200306161713.php
index 5ea48c20b..62693a0fd 100644
--- a/lib/Migration/Version1000Date20200306161713.php
+++ b/lib/Migration/Version1000Date20200306161713.php
@@ -10,22 +10,7 @@ use OCP\Migration\IOutput;
 use OCP\Migration\SimpleMigrationStep;
 
 class Version1000Date20200306161713 extends SimpleMigrationStep {
-
-	/**
-	 * @param IOutput $output
-	 * @param Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
-	 * @param array $options
-	 */
-	public function preSchemaChange(IOutput $output, Closure $schemaClosure, array $options) {
-	}
-
-	/**
-	 * @param IOutput $output
-	 * @param Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
-	 * @param array $options
-	 * @return null|ISchemaWrapper
-	 */
-	public function changeSchema(IOutput $output, Closure $schemaClosure, array $options) {
+	public function changeSchema(IOutput $output, Closure $schemaClosure, array $options): ?ISchemaWrapper {
 		/** @var ISchemaWrapper $schema */
 		$schema = $schemaClosure();
 
diff --git a/lib/Migration/Version1000Date20200308073933.php b/lib/Migration/Version1000Date20200308073933.php
index 64259231b..5e91e2537 100644
--- a/lib/Migration/Version1000Date20200308073933.php
+++ b/lib/Migration/Version1000Date20200308073933.php
@@ -13,22 +13,7 @@ use OCP\Migration\SimpleMigrationStep;
  * Auto-generated migration step: Please modify to your needs!
  */
 class Version1000Date20200308073933 extends SimpleMigrationStep {
-
-	/**
-	 * @param IOutput $output
-	 * @param Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
-	 * @param array $options
-	 */
-	public function preSchemaChange(IOutput $output, Closure $schemaClosure, array $options) {
-	}
-
-	/**
-	 * @param IOutput $output
-	 * @param Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
-	 * @param array $options
-	 * @return null|ISchemaWrapper
-	 */
-	public function changeSchema(IOutput $output, Closure $schemaClosure, array $options) {
+	public function changeSchema(IOutput $output, Closure $schemaClosure, array $options): ?ISchemaWrapper {
 		/** @var ISchemaWrapper $schema */
 		$schema = $schemaClosure();
 
@@ -44,12 +29,4 @@ class Version1000Date20200308073933 extends SimpleMigrationStep {
 
 		return $schema;
 	}
-
-	/**
-	 * @param IOutput $output
-	 * @param Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
-	 * @param array $options
-	 */
-	public function postSchemaChange(IOutput $output, Closure $schemaClosure, array $options) {
-	}
 }
diff --git a/lib/Migration/Version10200Date20201111150114.php b/lib/Migration/Version10200Date20201111150114.php
index 85bbffabe..101e45aae 100644
--- a/lib/Migration/Version10200Date20201111150114.php
+++ b/lib/Migration/Version10200Date20201111150114.php
@@ -10,11 +10,6 @@ use OCP\Migration\IOutput;
 use OCP\Migration\SimpleMigrationStep;
 
 class Version10200Date20201111150114 extends SimpleMigrationStep {
-
-
-	function preSchemaChange(IOutput $output, Closure $schemaClosure, array $options): void {
-	}
-
 	public function changeSchema(IOutput $output, Closure $schemaClosure, array $options): ?ISchemaWrapper {
 		/** @var ISchemaWrapper $schema */
 		$schema = $schemaClosure();
@@ -28,9 +23,82 @@ class Version10200Date20201111150114 extends SimpleMigrationStep {
 			}
 		}
 
+		// Check consistency of the labels table when updating from a version < 0.6
+		// git commit for database.xml change at b0eaae6705dbfb9ce834d4047912d3e34eaa157f
+		$table = $schema->getTable('deck_labels');
+		if (!$table->hasColumn('last_modified')) {
+			$table->addColumn('last_modified', 'integer', [
+				'notnull' => false,
+				'default' => 0,
+				'unsigned' => true,
+			]);
+		}
+
+		// Check consistency of the cards table when updating from a version < 0.5.1
+		// git commit for database.xml change at dd104466d61e32f59552da183034522e04effe35
+		$table = $schema->getTable('deck_cards');
+		if (!$table->hasColumn('description_prev')) {
+			$table->addColumn('description_prev', 'text', [
+				'notnull' => false,
+			]);
+		}
+		if (!$table->hasColumn('last_editor')) {
+			$table->addColumn('last_editor', 'string', [
+				'notnull' => false,
+				'length' => 64,
+			]);
+		}
+
+		// Check consistency of the cards table when updating from a version < 0.5.0
+		// git commit for database.xml change at a068d6e1c6588662f0ea131e57f974238538eda6
+		$table = $schema->getTable('deck_boards');
+		if (!$table->hasColumn('last_modified')) {
+			$table->addColumn('last_modified', 'integer', [
+				'notnull' => false,
+				'default' => 0,
+				'unsigned' => true,
+			]);
+		}
+		$table = $schema->getTable('deck_stacks');
+		if (!$table->hasColumn('last_modified')) {
+			$table->addColumn('last_modified', 'integer', [
+				'notnull' => false,
+				'default' => 0,
+				'unsigned' => true,
+			]);
+		}
+
+		// Check consistency of the cards table when updating from a version < 0.5.0
+		// git commit for database.xml change at ef4ce31c47a5ef70d1a4d00f2d4cd182ac067f2c
+		$table = $schema->getTable('deck_stacks');
+		if (!$table->hasColumn('deleted_at')) {
+			$table->addColumn('deleted_at', 'bigint', [
+				'notnull' => false,
+				'length' => 8,
+				'default' => 0,
+				'unsigned' => true,
+			]);
+		}
+
+		// Check consistency of the cards table when updating from a version < 0.5.0
+		// git commit for database.xml change at 2ef4b55af427d90412544e77916e9449db7dbbcd
+		$table = $schema->getTable('deck_cards');
+		if (!$table->hasColumn('deleted_at')) {
+			$table->addColumn('deleted_at', 'bigint', [
+				'notnull' => false,
+				'length' => 8,
+				'default' => 0,
+				'unsigned' => true,
+			]);
+		}
+
+		$table = $schema->getTable('deck_cards');
+		if ($table->getColumn('title')->getLength() !== 255) {
+			$table->changeColumn('title', [
+				'length' => 255
+			]);
+		}
+
 		return $schema;
 	}
-
-	public function postSchemaChange(IOutput $output, Closure $schemaClosure, array $options): void {
-	}
 }
diff --git a/lib/Service/CardService.php b/lib/Service/CardService.php
index 46cf3307d..90cb1ee26 100644
--- a/lib/Service/CardService.php
+++ b/lib/Service/CardService.php
@@ -172,6 +172,10 @@ class CardService {
 			throw new BadRequestException('title must be provided');
 		}
 
+		if (mb_strlen($title) > Card::TITLE_MAX_LENGTH) {
+			throw new BadRequestException('The title cannot exceed 255 characters');
+		}
+
 		if (is_numeric($stackId) === false) {
 			throw new BadRequestException('stack id must be a number');
 		}
@@ -270,6 +274,10 @@ class CardService {
 			throw new BadRequestException('title must be provided');
 		}
 
+		if (mb_strlen($title) > Card::TITLE_MAX_LENGTH) {
+			throw new BadRequestException('The title cannot exceed 255 characters');
+		}
+
 		if (is_numeric($stackId) === false) {
 			throw new BadRequestException('stack id must be a number $$$');
 		}
@@ -361,6 +369,10 @@ class CardService {
 			throw new BadRequestException('title must be provided');
 		}
 
+		if (mb_strlen($title) > Card::TITLE_MAX_LENGTH) {
+			throw new BadRequestException('The title cannot exceed 255 characters');
+		}
+
 		$this->permissionService->checkPermission($this->cardMapper, $id, Acl::PERMISSION_EDIT);
 		if ($this->boardService->isArchived($this->cardMapper, $id)) {
 			throw new StatusException('Operation not allowed. This board is archived.');