diff --git a/core/lib/Drupal/Core/Database/Connection.php b/core/lib/Drupal/Core/Database/Connection.php
index ce7e04f..01572b2 100644
--- a/core/lib/Drupal/Core/Database/Connection.php
+++ b/core/lib/Drupal/Core/Database/Connection.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Connection
+ * Contains \Drupal\Core\Database\Connection
  */
 
 namespace Drupal\Core\Database;
diff --git a/core/lib/Drupal/Core/Database/ConnectionNotDefinedException.php b/core/lib/Drupal/Core/Database/ConnectionNotDefinedException.php
index d145358..b0d6a06 100644
--- a/core/lib/Drupal/Core/Database/ConnectionNotDefinedException.php
+++ b/core/lib/Drupal/Core/Database/ConnectionNotDefinedException.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\ConnectionNotDefinedException
+ * Contains \Drupal\Core\Database\ConnectionNotDefinedException
  */
 
 namespace Drupal\Core\Database;
diff --git a/core/lib/Drupal/Core/Database/Database.php b/core/lib/Drupal/Core/Database/Database.php
index d6c28ca..a12ef38 100644
--- a/core/lib/Drupal/Core/Database/Database.php
+++ b/core/lib/Drupal/Core/Database/Database.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Database
+ * Contains \Drupal\Core\Database\Database
  */
 
 namespace Drupal\Core\Database;
diff --git a/core/lib/Drupal/Core/Database/DatabaseException.php b/core/lib/Drupal/Core/Database/DatabaseException.php
index 019d656..50f9041 100644
--- a/core/lib/Drupal/Core/Database/DatabaseException.php
+++ b/core/lib/Drupal/Core/Database/DatabaseException.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\DatabaseException
+ * Contains \Drupal\Core\Database\DatabaseException
  */
 
 namespace Drupal\Core\Database;
diff --git a/core/lib/Drupal/Core/Database/DatabaseExceptionWrapper.php b/core/lib/Drupal/Core/Database/DatabaseExceptionWrapper.php
index b212478..60c622f 100644
--- a/core/lib/Drupal/Core/Database/DatabaseExceptionWrapper.php
+++ b/core/lib/Drupal/Core/Database/DatabaseExceptionWrapper.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\DatabaseExceptionWrapper.
+ * Contains \Drupal\Core\Database\DatabaseExceptionWrapper.
  */
 
 namespace Drupal\Core\Database;
diff --git a/core/lib/Drupal/Core/Database/DatabaseNotFoundException.php b/core/lib/Drupal/Core/Database/DatabaseNotFoundException.php
index fa1327f..65d1104 100644
--- a/core/lib/Drupal/Core/Database/DatabaseNotFoundException.php
+++ b/core/lib/Drupal/Core/Database/DatabaseNotFoundException.php
@@ -1,7 +1,7 @@
 <?php
 /**
  * @file
- * Contains Drupal\Core\Database\DatabaseNotFoundException.
+ * Contains \Drupal\Core\Database\DatabaseNotFoundException.
  */
 
 namespace Drupal\Core\Database;
diff --git a/core/lib/Drupal/Core/Database/Driver/mysql/Connection.php b/core/lib/Drupal/Core/Database/Driver/mysql/Connection.php
index 1922e6d..91d0010 100644
--- a/core/lib/Drupal/Core/Database/Driver/mysql/Connection.php
+++ b/core/lib/Drupal/Core/Database/Driver/mysql/Connection.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\mysql\Connection
+ * Contains \Drupal\Core\Database\Driver\mysql\Connection
  */
 
 namespace Drupal\Core\Database\Driver\mysql;
diff --git a/core/lib/Drupal/Core/Database/Driver/mysql/Delete.php b/core/lib/Drupal/Core/Database/Driver/mysql/Delete.php
index de0db11..141d88a 100644
--- a/core/lib/Drupal/Core/Database/Driver/mysql/Delete.php
+++ b/core/lib/Drupal/Core/Database/Driver/mysql/Delete.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\mysql\Delete
+ * Contains \Drupal\Core\Database\Driver\mysql\Delete
  */
 
 namespace Drupal\Core\Database\Driver\mysql;
diff --git a/core/lib/Drupal/Core/Database/Driver/mysql/Insert.php b/core/lib/Drupal/Core/Database/Driver/mysql/Insert.php
index c41fdf3..bafef56 100644
--- a/core/lib/Drupal/Core/Database/Driver/mysql/Insert.php
+++ b/core/lib/Drupal/Core/Database/Driver/mysql/Insert.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\mysql\Insert
+ * Contains \Drupal\Core\Database\Driver\mysql\Insert
  */
 
 namespace Drupal\Core\Database\Driver\mysql;
diff --git a/core/lib/Drupal/Core/Database/Driver/mysql/Install/Tasks.php b/core/lib/Drupal/Core/Database/Driver/mysql/Install/Tasks.php
index e4ecd99..e41586f 100644
--- a/core/lib/Drupal/Core/Database/Driver/mysql/Install/Tasks.php
+++ b/core/lib/Drupal/Core/Database/Driver/mysql/Install/Tasks.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\mysql\Install\Tasks
+ * Contains \Drupal\Core\Database\Driver\mysql\Install\Tasks
  */
 
 namespace Drupal\Core\Database\Driver\mysql\Install;
diff --git a/core/lib/Drupal/Core/Database/Driver/mysql/Merge.php b/core/lib/Drupal/Core/Database/Driver/mysql/Merge.php
index c48b830..5caf6ab 100644
--- a/core/lib/Drupal/Core/Database/Driver/mysql/Merge.php
+++ b/core/lib/Drupal/Core/Database/Driver/mysql/Merge.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\mysql\Merge
+ * Contains \Drupal\Core\Database\Driver\mysql\Merge
  */
 
 namespace Drupal\Core\Database\Driver\mysql;
diff --git a/core/lib/Drupal/Core/Database/Driver/mysql/Schema.php b/core/lib/Drupal/Core/Database/Driver/mysql/Schema.php
index 5788bef..32e4677 100644
--- a/core/lib/Drupal/Core/Database/Driver/mysql/Schema.php
+++ b/core/lib/Drupal/Core/Database/Driver/mysql/Schema.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\mysql\Schema
+ * Contains \Drupal\Core\Database\Driver\mysql\Schema
  */
 
 namespace Drupal\Core\Database\Driver\mysql;
diff --git a/core/lib/Drupal/Core/Database/Driver/mysql/Select.php b/core/lib/Drupal/Core/Database/Driver/mysql/Select.php
index aecae55..8774598 100644
--- a/core/lib/Drupal/Core/Database/Driver/mysql/Select.php
+++ b/core/lib/Drupal/Core/Database/Driver/mysql/Select.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\mysql\Select
+ * Contains \Drupal\Core\Database\Driver\mysql\Select
  */
 
 namespace Drupal\Core\Database\Driver\mysql;
diff --git a/core/lib/Drupal/Core/Database/Driver/mysql/Transaction.php b/core/lib/Drupal/Core/Database/Driver/mysql/Transaction.php
index 570a130..ea1b5e8 100644
--- a/core/lib/Drupal/Core/Database/Driver/mysql/Transaction.php
+++ b/core/lib/Drupal/Core/Database/Driver/mysql/Transaction.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\mysql\Transaction
+ * Contains \Drupal\Core\Database\Driver\mysql\Transaction
  */
 
 namespace Drupal\Core\Database\Driver\mysql;
diff --git a/core/lib/Drupal/Core/Database/Driver/mysql/Truncate.php b/core/lib/Drupal/Core/Database/Driver/mysql/Truncate.php
index c7d7a36..3ea3887 100644
--- a/core/lib/Drupal/Core/Database/Driver/mysql/Truncate.php
+++ b/core/lib/Drupal/Core/Database/Driver/mysql/Truncate.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\mysql\Truncate
+ * Contains \Drupal\Core\Database\Driver\mysql\Truncate
  */
 
 namespace Drupal\Core\Database\Driver\mysql;
diff --git a/core/lib/Drupal/Core/Database/Driver/mysql/Update.php b/core/lib/Drupal/Core/Database/Driver/mysql/Update.php
index 5b3bda6..a3e8fe6 100644
--- a/core/lib/Drupal/Core/Database/Driver/mysql/Update.php
+++ b/core/lib/Drupal/Core/Database/Driver/mysql/Update.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\mysql\Update
+ * Contains \Drupal\Core\Database\Driver\mysql\Update
  */
 
 namespace Drupal\Core\Database\Driver\mysql;
diff --git a/core/lib/Drupal/Core/Database/Driver/pgsql/Connection.php b/core/lib/Drupal/Core/Database/Driver/pgsql/Connection.php
index 30e9e01..9f96792 100644
--- a/core/lib/Drupal/Core/Database/Driver/pgsql/Connection.php
+++ b/core/lib/Drupal/Core/Database/Driver/pgsql/Connection.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\pgsql\Connection
+ * Contains \Drupal\Core\Database\Driver\pgsql\Connection
  */
 
 namespace Drupal\Core\Database\Driver\pgsql;
diff --git a/core/lib/Drupal/Core/Database/Driver/pgsql/Delete.php b/core/lib/Drupal/Core/Database/Driver/pgsql/Delete.php
index e9914ca..d10ba93 100644
--- a/core/lib/Drupal/Core/Database/Driver/pgsql/Delete.php
+++ b/core/lib/Drupal/Core/Database/Driver/pgsql/Delete.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\pgsql\Delete
+ * Contains \Drupal\Core\Database\Driver\pgsql\Delete
  */
 
 namespace Drupal\Core\Database\Driver\pgsql;
diff --git a/core/lib/Drupal/Core/Database/Driver/pgsql/Insert.php b/core/lib/Drupal/Core/Database/Driver/pgsql/Insert.php
index 998cbb7..0a38cb9 100644
--- a/core/lib/Drupal/Core/Database/Driver/pgsql/Insert.php
+++ b/core/lib/Drupal/Core/Database/Driver/pgsql/Insert.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\pgsql\Insert
+ * Contains \Drupal\Core\Database\Driver\pgsql\Insert
  */
 
 namespace Drupal\Core\Database\Driver\pgsql;
diff --git a/core/lib/Drupal/Core/Database/Driver/pgsql/Install/Tasks.php b/core/lib/Drupal/Core/Database/Driver/pgsql/Install/Tasks.php
index bb30901..659ecb0 100644
--- a/core/lib/Drupal/Core/Database/Driver/pgsql/Install/Tasks.php
+++ b/core/lib/Drupal/Core/Database/Driver/pgsql/Install/Tasks.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\pgsql\Install\Tasks
+ * Contains \Drupal\Core\Database\Driver\pgsql\Install\Tasks
  */
 
 namespace Drupal\Core\Database\Driver\pgsql\Install;
diff --git a/core/lib/Drupal/Core/Database/Driver/pgsql/Merge.php b/core/lib/Drupal/Core/Database/Driver/pgsql/Merge.php
index c3a2ae0..84f77d9 100644
--- a/core/lib/Drupal/Core/Database/Driver/pgsql/Merge.php
+++ b/core/lib/Drupal/Core/Database/Driver/pgsql/Merge.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\pgsql\Merge
+ * Contains \Drupal\Core\Database\Driver\pgsql\Merge
  */
 
 namespace Drupal\Core\Database\Driver\pgsql;
diff --git a/core/lib/Drupal/Core/Database/Driver/pgsql/Schema.php b/core/lib/Drupal/Core/Database/Driver/pgsql/Schema.php
index e2798e1..796e56b 100644
--- a/core/lib/Drupal/Core/Database/Driver/pgsql/Schema.php
+++ b/core/lib/Drupal/Core/Database/Driver/pgsql/Schema.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\pgsql\Schema
+ * Contains \Drupal\Core\Database\Driver\pgsql\Schema
  */
 
 namespace Drupal\Core\Database\Driver\pgsql;
diff --git a/core/lib/Drupal/Core/Database/Driver/pgsql/Select.php b/core/lib/Drupal/Core/Database/Driver/pgsql/Select.php
index bf9f23a..e25c897 100644
--- a/core/lib/Drupal/Core/Database/Driver/pgsql/Select.php
+++ b/core/lib/Drupal/Core/Database/Driver/pgsql/Select.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\pgsql\Select
+ * Contains \Drupal\Core\Database\Driver\pgsql\Select
  */
 
 namespace Drupal\Core\Database\Driver\pgsql;
diff --git a/core/lib/Drupal/Core/Database/Driver/pgsql/Transaction.php b/core/lib/Drupal/Core/Database/Driver/pgsql/Transaction.php
index 8c3f701..e2f4493 100644
--- a/core/lib/Drupal/Core/Database/Driver/pgsql/Transaction.php
+++ b/core/lib/Drupal/Core/Database/Driver/pgsql/Transaction.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\pgsql\Transaction
+ * Contains \Drupal\Core\Database\Driver\pgsql\Transaction
  */
 
 namespace Drupal\Core\Database\Driver\pgsql;
diff --git a/core/lib/Drupal/Core/Database/Driver/pgsql/Truncate.php b/core/lib/Drupal/Core/Database/Driver/pgsql/Truncate.php
index e2fa83d..349f912 100644
--- a/core/lib/Drupal/Core/Database/Driver/pgsql/Truncate.php
+++ b/core/lib/Drupal/Core/Database/Driver/pgsql/Truncate.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\pgsql\Truncate
+ * Contains \Drupal\Core\Database\Driver\pgsql\Truncate
  */
 
 namespace Drupal\Core\Database\Driver\pgsql;
diff --git a/core/lib/Drupal/Core/Database/Driver/pgsql/Update.php b/core/lib/Drupal/Core/Database/Driver/pgsql/Update.php
index de738bf..5b9b527 100644
--- a/core/lib/Drupal/Core/Database/Driver/pgsql/Update.php
+++ b/core/lib/Drupal/Core/Database/Driver/pgsql/Update.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\pgsql\Update
+ * Contains \Drupal\Core\Database\Driver\pgsql\Update
  */
 
 namespace Drupal\Core\Database\Driver\pgsql;
diff --git a/core/lib/Drupal/Core/Database/Driver/sqlite/Connection.php b/core/lib/Drupal/Core/Database/Driver/sqlite/Connection.php
index 768b8ca..cd4b8e8 100644
--- a/core/lib/Drupal/Core/Database/Driver/sqlite/Connection.php
+++ b/core/lib/Drupal/Core/Database/Driver/sqlite/Connection.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\sqlite\Connection
+ * Contains \Drupal\Core\Database\Driver\sqlite\Connection
  */
 
 namespace Drupal\Core\Database\Driver\sqlite;
diff --git a/core/lib/Drupal/Core/Database/Driver/sqlite/Delete.php b/core/lib/Drupal/Core/Database/Driver/sqlite/Delete.php
index c0056cb..5b3a8ea 100644
--- a/core/lib/Drupal/Core/Database/Driver/sqlite/Delete.php
+++ b/core/lib/Drupal/Core/Database/Driver/sqlite/Delete.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\sqlite\Delete
+ * Contains \Drupal\Core\Database\Driver\sqlite\Delete
  */
 
 namespace Drupal\Core\Database\Driver\sqlite;
diff --git a/core/lib/Drupal/Core/Database/Driver/sqlite/Insert.php b/core/lib/Drupal/Core/Database/Driver/sqlite/Insert.php
index 3a0bcaa..6073e6c 100644
--- a/core/lib/Drupal/Core/Database/Driver/sqlite/Insert.php
+++ b/core/lib/Drupal/Core/Database/Driver/sqlite/Insert.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\sqlite\Insert
+ * Contains \Drupal\Core\Database\Driver\sqlite\Insert
  */
 
 namespace Drupal\Core\Database\Driver\sqlite;
diff --git a/core/lib/Drupal/Core/Database/Driver/sqlite/Install/Tasks.php b/core/lib/Drupal/Core/Database/Driver/sqlite/Install/Tasks.php
index 1079688..f457368 100644
--- a/core/lib/Drupal/Core/Database/Driver/sqlite/Install/Tasks.php
+++ b/core/lib/Drupal/Core/Database/Driver/sqlite/Install/Tasks.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\sqlite\Install\Tasks
+ * Contains \Drupal\Core\Database\Driver\sqlite\Install\Tasks
  */
 
 namespace Drupal\Core\Database\Driver\sqlite\Install;
diff --git a/core/lib/Drupal/Core/Database/Driver/sqlite/Merge.php b/core/lib/Drupal/Core/Database/Driver/sqlite/Merge.php
index 3bbc3de..0acc914 100644
--- a/core/lib/Drupal/Core/Database/Driver/sqlite/Merge.php
+++ b/core/lib/Drupal/Core/Database/Driver/sqlite/Merge.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\sqlite\Merge
+ * Contains \Drupal\Core\Database\Driver\sqlite\Merge
  */
 
 namespace Drupal\Core\Database\Driver\sqlite;
diff --git a/core/lib/Drupal/Core/Database/Driver/sqlite/Schema.php b/core/lib/Drupal/Core/Database/Driver/sqlite/Schema.php
index f8050cd..8ea9e6b 100644
--- a/core/lib/Drupal/Core/Database/Driver/sqlite/Schema.php
+++ b/core/lib/Drupal/Core/Database/Driver/sqlite/Schema.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\sqlite\Schema
+ * Contains \Drupal\Core\Database\Driver\sqlite\Schema
  */
 
 namespace Drupal\Core\Database\Driver\sqlite;
diff --git a/core/lib/Drupal/Core/Database/Driver/sqlite/Select.php b/core/lib/Drupal/Core/Database/Driver/sqlite/Select.php
index 5403611..f4dc638 100644
--- a/core/lib/Drupal/Core/Database/Driver/sqlite/Select.php
+++ b/core/lib/Drupal/Core/Database/Driver/sqlite/Select.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\sqlite\Select
+ * Contains \Drupal\Core\Database\Driver\sqlite\Select
  */
 
 namespace Drupal\Core\Database\Driver\sqlite;
diff --git a/core/lib/Drupal/Core/Database/Driver/sqlite/Statement.php b/core/lib/Drupal/Core/Database/Driver/sqlite/Statement.php
index b21d448..6625e7f 100644
--- a/core/lib/Drupal/Core/Database/Driver/sqlite/Statement.php
+++ b/core/lib/Drupal/Core/Database/Driver/sqlite/Statement.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\sqlite\Statement
+ * Contains \Drupal\Core\Database\Driver\sqlite\Statement
  */
 
 namespace Drupal\Core\Database\Driver\sqlite;
diff --git a/core/lib/Drupal/Core/Database/Driver/sqlite/Transaction.php b/core/lib/Drupal/Core/Database/Driver/sqlite/Transaction.php
index ae73ed8..6519cd1 100644
--- a/core/lib/Drupal/Core/Database/Driver/sqlite/Transaction.php
+++ b/core/lib/Drupal/Core/Database/Driver/sqlite/Transaction.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\sqlite\Transaction
+ * Contains \Drupal\Core\Database\Driver\sqlite\Transaction
  */
 
 namespace Drupal\Core\Database\Driver\sqlite;
diff --git a/core/lib/Drupal/Core/Database/Driver/sqlite/Truncate.php b/core/lib/Drupal/Core/Database/Driver/sqlite/Truncate.php
index d06d27e..20d3984 100644
--- a/core/lib/Drupal/Core/Database/Driver/sqlite/Truncate.php
+++ b/core/lib/Drupal/Core/Database/Driver/sqlite/Truncate.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\sqlite\Truncate
+ * Contains \Drupal\Core\Database\Driver\sqlite\Truncate
  */
 
 namespace Drupal\Core\Database\Driver\sqlite;
diff --git a/core/lib/Drupal/Core/Database/Driver/sqlite/Update.php b/core/lib/Drupal/Core/Database/Driver/sqlite/Update.php
index fa7d54b..7557f1e 100644
--- a/core/lib/Drupal/Core/Database/Driver/sqlite/Update.php
+++ b/core/lib/Drupal/Core/Database/Driver/sqlite/Update.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Driver\sqlite\Update
+ * Contains \Drupal\Core\Database\Driver\sqlite\Update
  */
 
 namespace Drupal\Core\Database\Driver\sqlite;
diff --git a/core/lib/Drupal/Core/Database/DriverNotSpecifiedException.php b/core/lib/Drupal/Core/Database/DriverNotSpecifiedException.php
index 9463931..18af9da 100644
--- a/core/lib/Drupal/Core/Database/DriverNotSpecifiedException.php
+++ b/core/lib/Drupal/Core/Database/DriverNotSpecifiedException.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\DriverNotSpecifiedException
+ * Contains \Drupal\Core\Database\DriverNotSpecifiedException
  */
 
 namespace Drupal\Core\Database;
diff --git a/core/lib/Drupal/Core/Database/Install/TaskException.php b/core/lib/Drupal/Core/Database/Install/TaskException.php
index d93b736..b5343c0 100644
--- a/core/lib/Drupal/Core/Database/Install/TaskException.php
+++ b/core/lib/Drupal/Core/Database/Install/TaskException.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Install\TaskException
+ * Contains \Drupal\Core\Database\Install\TaskException
  */
 
 namespace Drupal\Core\Database\Install;
diff --git a/core/lib/Drupal/Core/Database/Install/Tasks.php b/core/lib/Drupal/Core/Database/Install/Tasks.php
index d46251b..1bbb1f1 100644
--- a/core/lib/Drupal/Core/Database/Install/Tasks.php
+++ b/core/lib/Drupal/Core/Database/Install/Tasks.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Install\Tasks
+ * Contains \Drupal\Core\Database\Install\Tasks
  */
 
 namespace Drupal\Core\Database\Install;
diff --git a/core/lib/Drupal/Core/Database/IntegrityConstraintViolationException.php b/core/lib/Drupal/Core/Database/IntegrityConstraintViolationException.php
index 7b8ac43..70a962c 100644
--- a/core/lib/Drupal/Core/Database/IntegrityConstraintViolationException.php
+++ b/core/lib/Drupal/Core/Database/IntegrityConstraintViolationException.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\IntegrityConstraintViolationException
+ * Contains \Drupal\Core\Database\IntegrityConstraintViolationException
  */
 
 namespace Drupal\Core\Database;
diff --git a/core/lib/Drupal/Core/Database/Log.php b/core/lib/Drupal/Core/Database/Log.php
index 14f5a38..69aad45 100644
--- a/core/lib/Drupal/Core/Database/Log.php
+++ b/core/lib/Drupal/Core/Database/Log.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Log
+ * Contains \Drupal\Core\Database\Log
  */
 
 namespace Drupal\Core\Database;
diff --git a/core/lib/Drupal/Core/Database/Query/AlterableInterface.php b/core/lib/Drupal/Core/Database/Query/AlterableInterface.php
index 66a41e2..70f0971 100644
--- a/core/lib/Drupal/Core/Database/Query/AlterableInterface.php
+++ b/core/lib/Drupal/Core/Database/Query/AlterableInterface.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Query\AlterableInterface
+ * Contains \Drupal\Core\Database\Query\AlterableInterface
  */
 
 namespace Drupal\Core\Database\Query;
diff --git a/core/lib/Drupal/Core/Database/Query/Condition.php b/core/lib/Drupal/Core/Database/Query/Condition.php
index 1b21545..5ecbe97 100644
--- a/core/lib/Drupal/Core/Database/Query/Condition.php
+++ b/core/lib/Drupal/Core/Database/Query/Condition.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Query\Condition
+ * Contains \Drupal\Core\Database\Query\Condition
  */
 
 namespace Drupal\Core\Database\Query;
diff --git a/core/lib/Drupal/Core/Database/Query/ConditionInterface.php b/core/lib/Drupal/Core/Database/Query/ConditionInterface.php
index 7af7079..147ba5c 100644
--- a/core/lib/Drupal/Core/Database/Query/ConditionInterface.php
+++ b/core/lib/Drupal/Core/Database/Query/ConditionInterface.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Query\ConditionInterface
+ * Contains \Drupal\Core\Database\Query\ConditionInterface
  */
 
 namespace Drupal\Core\Database\Query;
diff --git a/core/lib/Drupal/Core/Database/Query/Delete.php b/core/lib/Drupal/Core/Database/Query/Delete.php
index 3ecd040..f164ed6 100644
--- a/core/lib/Drupal/Core/Database/Query/Delete.php
+++ b/core/lib/Drupal/Core/Database/Query/Delete.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Query\Delete
+ * Contains \Drupal\Core\Database\Query\Delete
  */
 
 namespace Drupal\Core\Database\Query;
diff --git a/core/lib/Drupal/Core/Database/Query/ExtendableInterface.php b/core/lib/Drupal/Core/Database/Query/ExtendableInterface.php
index 01dcc90..36c92ad 100644
--- a/core/lib/Drupal/Core/Database/Query/ExtendableInterface.php
+++ b/core/lib/Drupal/Core/Database/Query/ExtendableInterface.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Query\ExtendableInterface
+ * Contains \Drupal\Core\Database\Query\ExtendableInterface
  */
 
 namespace Drupal\Core\Database\Query;
diff --git a/core/lib/Drupal/Core/Database/Query/FieldsOverlapException.php b/core/lib/Drupal/Core/Database/Query/FieldsOverlapException.php
index f9d9372..955e7b8 100644
--- a/core/lib/Drupal/Core/Database/Query/FieldsOverlapException.php
+++ b/core/lib/Drupal/Core/Database/Query/FieldsOverlapException.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Query\FieldsOverlapExceptoin
+ * Contains \Drupal\Core\Database\Query\FieldsOverlapExceptoin
  */
 
 namespace Drupal\Core\Database\Query;
diff --git a/core/lib/Drupal/Core/Database/Query/Insert.php b/core/lib/Drupal/Core/Database/Query/Insert.php
index 72cadb8..6bb874d 100644
--- a/core/lib/Drupal/Core/Database/Query/Insert.php
+++ b/core/lib/Drupal/Core/Database/Query/Insert.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Query\Insert
+ * Contains \Drupal\Core\Database\Query\Insert
  */
 
 namespace Drupal\Core\Database\Query;
diff --git a/core/lib/Drupal/Core/Database/Query/InvalidMergeQueryException.php b/core/lib/Drupal/Core/Database/Query/InvalidMergeQueryException.php
index 59ad1c9..1bf88b3 100644
--- a/core/lib/Drupal/Core/Database/Query/InvalidMergeQueryException.php
+++ b/core/lib/Drupal/Core/Database/Query/InvalidMergeQueryException.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Query\InvalidMergeQueryException
+ * Contains \Drupal\Core\Database\Query\InvalidMergeQueryException
  */
 
 namespace Drupal\Core\Database\Query;
diff --git a/core/lib/Drupal/Core/Database/Query/Merge.php b/core/lib/Drupal/Core/Database/Query/Merge.php
index 0bff74c..f8be2d6 100644
--- a/core/lib/Drupal/Core/Database/Query/Merge.php
+++ b/core/lib/Drupal/Core/Database/Query/Merge.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Query\Merge
+ * Contains \Drupal\Core\Database\Query\Merge
  */
 
 namespace Drupal\Core\Database\Query;
diff --git a/core/lib/Drupal/Core/Database/Query/NoFieldsException.php b/core/lib/Drupal/Core/Database/Query/NoFieldsException.php
index 18851fd..c17d6cf 100644
--- a/core/lib/Drupal/Core/Database/Query/NoFieldsException.php
+++ b/core/lib/Drupal/Core/Database/Query/NoFieldsException.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Query\NoFieldsException
+ * Contains \Drupal\Core\Database\Query\NoFieldsException
  */
 
 namespace Drupal\Core\Database\Query;
diff --git a/core/lib/Drupal/Core/Database/Query/PagerSelectExtender.php b/core/lib/Drupal/Core/Database/Query/PagerSelectExtender.php
index 0668fa5..67deb8d 100644
--- a/core/lib/Drupal/Core/Database/Query/PagerSelectExtender.php
+++ b/core/lib/Drupal/Core/Database/Query/PagerSelectExtender.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Query\PagerSelectExtender
+ * Contains \Drupal\Core\Database\Query\PagerSelectExtender
  */
 
 namespace Drupal\Core\Database\Query;
diff --git a/core/lib/Drupal/Core/Database/Query/PlaceholderInterface.php b/core/lib/Drupal/Core/Database/Query/PlaceholderInterface.php
index 68b802e..14f1397 100644
--- a/core/lib/Drupal/Core/Database/Query/PlaceholderInterface.php
+++ b/core/lib/Drupal/Core/Database/Query/PlaceholderInterface.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Query\PlaceholderInterface
+ * Contains \Drupal\Core\Database\Query\PlaceholderInterface
  */
 
 namespace Drupal\Core\Database\Query;
diff --git a/core/lib/Drupal/Core/Database/Query/Query.php b/core/lib/Drupal/Core/Database/Query/Query.php
index 38d926c..5791263 100644
--- a/core/lib/Drupal/Core/Database/Query/Query.php
+++ b/core/lib/Drupal/Core/Database/Query/Query.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Query\Query
+ * Contains \Drupal\Core\Database\Query\Query
  */
 
 namespace Drupal\Core\Database\Query;
diff --git a/core/lib/Drupal/Core/Database/Query/Select.php b/core/lib/Drupal/Core/Database/Query/Select.php
index e5eeaf2..8c7c180 100644
--- a/core/lib/Drupal/Core/Database/Query/Select.php
+++ b/core/lib/Drupal/Core/Database/Query/Select.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Query\Select
+ * Contains \Drupal\Core\Database\Query\Select
  */
 
 namespace Drupal\Core\Database\Query;
diff --git a/core/lib/Drupal/Core/Database/Query/SelectExtender.php b/core/lib/Drupal/Core/Database/Query/SelectExtender.php
index e14c65e..8c15748 100644
--- a/core/lib/Drupal/Core/Database/Query/SelectExtender.php
+++ b/core/lib/Drupal/Core/Database/Query/SelectExtender.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Query\SelectExtender
+ * Contains \Drupal\Core\Database\Query\SelectExtender
  */
 
 namespace Drupal\Core\Database\Query;
diff --git a/core/lib/Drupal/Core/Database/Query/SelectInterface.php b/core/lib/Drupal/Core/Database/Query/SelectInterface.php
index 779e69d..33f9d8b 100644
--- a/core/lib/Drupal/Core/Database/Query/SelectInterface.php
+++ b/core/lib/Drupal/Core/Database/Query/SelectInterface.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Query\SelectInterface
+ * Contains \Drupal\Core\Database\Query\SelectInterface
  */
 
 namespace Drupal\Core\Database\Query;
diff --git a/core/lib/Drupal/Core/Database/Query/TableSortExtender.php b/core/lib/Drupal/Core/Database/Query/TableSortExtender.php
index cf1a042..eddc875 100644
--- a/core/lib/Drupal/Core/Database/Query/TableSortExtender.php
+++ b/core/lib/Drupal/Core/Database/Query/TableSortExtender.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Query\TableSortExtender.
+ * Contains \Drupal\Core\Database\Query\TableSortExtender.
  */
 
 namespace Drupal\Core\Database\Query;
diff --git a/core/lib/Drupal/Core/Database/Query/Truncate.php b/core/lib/Drupal/Core/Database/Query/Truncate.php
index ea67dad..06931b6 100644
--- a/core/lib/Drupal/Core/Database/Query/Truncate.php
+++ b/core/lib/Drupal/Core/Database/Query/Truncate.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Query\Truncate
+ * Contains \Drupal\Core\Database\Query\Truncate
  */
 
 namespace Drupal\Core\Database\Query;
diff --git a/core/lib/Drupal/Core/Database/Query/Update.php b/core/lib/Drupal/Core/Database/Query/Update.php
index abbbc2b..9dd4f32 100644
--- a/core/lib/Drupal/Core/Database/Query/Update.php
+++ b/core/lib/Drupal/Core/Database/Query/Update.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Query\Update
+ * Contains \Drupal\Core\Database\Query\Update
  */
 
 namespace Drupal\Core\Database\Query;
diff --git a/core/lib/Drupal/Core/Database/Schema.php b/core/lib/Drupal/Core/Database/Schema.php
index 7b884f7..1a63d81 100644
--- a/core/lib/Drupal/Core/Database/Schema.php
+++ b/core/lib/Drupal/Core/Database/Schema.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Schema
+ * Contains \Drupal\Core\Database\Schema
  */
 
 namespace Drupal\Core\Database;
diff --git a/core/lib/Drupal/Core/Database/SchemaException.php b/core/lib/Drupal/Core/Database/SchemaException.php
index 3ae72b4..c533712 100644
--- a/core/lib/Drupal/Core/Database/SchemaException.php
+++ b/core/lib/Drupal/Core/Database/SchemaException.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\SchemaException
+ * Contains \Drupal\Core\Database\SchemaException
  */
 
 namespace Drupal\Core\Database;
diff --git a/core/lib/Drupal/Core/Database/SchemaObjectDoesNotExistException.php b/core/lib/Drupal/Core/Database/SchemaObjectDoesNotExistException.php
index ac5a1f8..3ac063b 100644
--- a/core/lib/Drupal/Core/Database/SchemaObjectDoesNotExistException.php
+++ b/core/lib/Drupal/Core/Database/SchemaObjectDoesNotExistException.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\SchemaObjectDoesNotExistException
+ * Contains \Drupal\Core\Database\SchemaObjectDoesNotExistException
  */
 
 namespace Drupal\Core\Database;
diff --git a/core/lib/Drupal/Core/Database/SchemaObjectExistsException.php b/core/lib/Drupal/Core/Database/SchemaObjectExistsException.php
index e8221b5..f3b3e14 100644
--- a/core/lib/Drupal/Core/Database/SchemaObjectExistsException.php
+++ b/core/lib/Drupal/Core/Database/SchemaObjectExistsException.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\SchemaObjectExistsException
+ * Contains \Drupal\Core\Database\SchemaObjectExistsException
  */
 
 namespace Drupal\Core\Database;
diff --git a/core/lib/Drupal/Core/Database/Statement.php b/core/lib/Drupal/Core/Database/Statement.php
index b7c9fdd..1a0ca84 100644
--- a/core/lib/Drupal/Core/Database/Statement.php
+++ b/core/lib/Drupal/Core/Database/Statement.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\StatementBase
+ * Contains \Drupal\Core\Database\StatementBase
  */
 
 namespace Drupal\Core\Database;
diff --git a/core/lib/Drupal/Core/Database/StatementEmpty.php b/core/lib/Drupal/Core/Database/StatementEmpty.php
index 4336fa1..647ff6b 100644
--- a/core/lib/Drupal/Core/Database/StatementEmpty.php
+++ b/core/lib/Drupal/Core/Database/StatementEmpty.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\StatementEmpty
+ * Contains \Drupal\Core\Database\StatementEmpty
  */
 
 namespace Drupal\Core\Database;
diff --git a/core/lib/Drupal/Core/Database/StatementInterface.php b/core/lib/Drupal/Core/Database/StatementInterface.php
index b3d356c..93b45b8 100644
--- a/core/lib/Drupal/Core/Database/StatementInterface.php
+++ b/core/lib/Drupal/Core/Database/StatementInterface.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\StatementInterface
+ * Contains \Drupal\Core\Database\StatementInterface
  */
 
 namespace Drupal\Core\Database;
diff --git a/core/lib/Drupal/Core/Database/StatementPrefetch.php b/core/lib/Drupal/Core/Database/StatementPrefetch.php
index f601f74..c4d8e74 100644
--- a/core/lib/Drupal/Core/Database/StatementPrefetch.php
+++ b/core/lib/Drupal/Core/Database/StatementPrefetch.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\StatementPrefetch
+ * Contains \Drupal\Core\Database\StatementPrefetch
  */
 
 namespace Drupal\Core\Database;
diff --git a/core/lib/Drupal/Core/Database/Transaction.php b/core/lib/Drupal/Core/Database/Transaction.php
index 2dceb24..5ae4f88 100644
--- a/core/lib/Drupal/Core/Database/Transaction.php
+++ b/core/lib/Drupal/Core/Database/Transaction.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\Transaction
+ * Contains \Drupal\Core\Database\Transaction
  */
 
 namespace Drupal\Core\Database;
diff --git a/core/lib/Drupal/Core/Database/TransactionCommitFailedException.php b/core/lib/Drupal/Core/Database/TransactionCommitFailedException.php
index 6a5309e..74ca028 100644
--- a/core/lib/Drupal/Core/Database/TransactionCommitFailedException.php
+++ b/core/lib/Drupal/Core/Database/TransactionCommitFailedException.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\TransactionCommitFailedException
+ * Contains \Drupal\Core\Database\TransactionCommitFailedException
  */
 
 namespace Drupal\Core\Database;
diff --git a/core/lib/Drupal/Core/Database/TransactionException.php b/core/lib/Drupal/Core/Database/TransactionException.php
index 25079f5..e662129 100644
--- a/core/lib/Drupal/Core/Database/TransactionException.php
+++ b/core/lib/Drupal/Core/Database/TransactionException.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\TransactionException
+ * Contains \Drupal\Core\Database\TransactionException
  */
 
 namespace Drupal\Core\Database;
diff --git a/core/lib/Drupal/Core/Database/TransactionExplicitCommitNotAllowedException.php b/core/lib/Drupal/Core/Database/TransactionExplicitCommitNotAllowedException.php
index fd4bf23..3715b6c 100644
--- a/core/lib/Drupal/Core/Database/TransactionExplicitCommitNotAllowedException.php
+++ b/core/lib/Drupal/Core/Database/TransactionExplicitCommitNotAllowedException.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\TransactionExplicitCommitNotAllowedException
+ * Contains \Drupal\Core\Database\TransactionExplicitCommitNotAllowedException
  */
 
 namespace Drupal\Core\Database;
diff --git a/core/lib/Drupal/Core/Database/TransactionNameNonUniqueException.php b/core/lib/Drupal/Core/Database/TransactionNameNonUniqueException.php
index aef40cb..327a7e6 100644
--- a/core/lib/Drupal/Core/Database/TransactionNameNonUniqueException.php
+++ b/core/lib/Drupal/Core/Database/TransactionNameNonUniqueException.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\TransactionNameNonUniqueException
+ * Contains \Drupal\Core\Database\TransactionNameNonUniqueException
  */
 
 namespace Drupal\Core\Database;
diff --git a/core/lib/Drupal/Core/Database/TransactionNoActiveException.php b/core/lib/Drupal/Core/Database/TransactionNoActiveException.php
index 44acede..5d7b928 100644
--- a/core/lib/Drupal/Core/Database/TransactionNoActiveException.php
+++ b/core/lib/Drupal/Core/Database/TransactionNoActiveException.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\TransactionNoActiveException
+ * Contains \Drupal\Core\Database\TransactionNoActiveException
  */
 
 namespace Drupal\Core\Database;
diff --git a/core/lib/Drupal/Core/Database/TransactionOutOfOrderException.php b/core/lib/Drupal/Core/Database/TransactionOutOfOrderException.php
index 2e2fe7a..b846a66 100644
--- a/core/lib/Drupal/Core/Database/TransactionOutOfOrderException.php
+++ b/core/lib/Drupal/Core/Database/TransactionOutOfOrderException.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\Core\Database\TransactionOutOfOrderException
+ * Contains \Drupal\Core\Database\TransactionOutOfOrderException
  */
 
 namespace Drupal\Core\Database;