diff --git a/manual/docs/Getting started - Record identifiers - Autoincremented.php b/manual/docs/Getting started - Record identifiers - Autoincremented.php
index e69de29bb..2c107e319 100644
--- a/manual/docs/Getting started - Record identifiers - Autoincremented.php	
+++ b/manual/docs/Getting started - Record identifiers - Autoincremented.php	
@@ -0,0 +1,2 @@
+Autoincrement primary key is the most basic identifier and its usage is strongly encouraged. Sometimes you may want to use some other name than 'id'
+for your autoinc primary key. It can be specified as follows:
diff --git a/manual/docs/Getting started - Record identifiers - Composite.php b/manual/docs/Getting started - Record identifiers - Composite.php
index e69de29bb..37f636a03 100644
--- a/manual/docs/Getting started - Record identifiers - Composite.php	
+++ b/manual/docs/Getting started - Record identifiers - Composite.php	
@@ -0,0 +1,4 @@
+Composite primary key can be used efficiently in association tables (tables that connect two components together). It is not recommended
+to use composite primary keys in anywhere else as Doctrine does not support mapping relations on multiple columns.
+<br \><br \>
+Due to this fact your doctrine-based system will scale better if it has autoincremented primary key even for association tables.