Refs #26351 -- Added check hook to support database-related checks

Thanks Tim Graham and Shai Berger for the reviews.

1 files changed, 12 insertions, 7 deletions

diff --git a/docs/topics/checks.txt b/docs/topics/checks.txt
index a019caa7c6..355e85714e 100644
--- a/docs/topics/checks.txt
+++ b/docs/topics/checks.txt
@@ -120,17 +120,22 @@ The code below is equivalent to the code above::
 
 .. _field-checking:
 
-Field, model, and manager checks
---------------------------------
+Field, model, manager, and database checks
+------------------------------------------
 
 In some cases, you won't need to register your check function -- you can
 piggyback on an existing registration.
 
-Fields, models, and model managers all implement a ``check()`` method that is
-already registered with the check framework. If you want to add extra checks,
-you can extend the implementation on the base class, perform any extra
-checks you need, and append any messages to those generated by the base class.
-It's recommended that you delegate each check to separate methods.
+Fields, models, model managers, and database backends all implement a
+``check()`` method that is already registered with the check framework. If you
+want to add extra checks, you can extend the implementation on the base class,
+perform any extra checks you need, and append any messages to those generated
+by the base class. It's recommended that you delegate each check to separate
+methods.
+
+.. versionchanged:: 1.10
+
+    Database backend checks were added.
 
 Consider an example where you are implementing a custom field named
 ``RangedIntegerField``. This field adds ``min`` and ``max`` arguments to the