diff --git a/django/db/backends/sqlite3/base.py b/django/db/backends/sqlite3/base.py
index 5cb21f5e3b..48d9ad4c4b 100644
--- a/django/db/backends/sqlite3/base.py
+++ b/django/db/backends/sqlite3/base.py
@@ -110,6 +110,9 @@ class DatabaseWrapper(BaseDatabaseWrapper):
 
     def _cursor(self, settings):
         if self.connection is None:
+            if not settings.DATABASE_NAME:
+                from django.core.exceptions import ImproperlyConfigured
+                raise ImproperlyConfigured, "Please fill out DATABASE_NAME in the settings module before using the database."
             kwargs = {
                 'database': settings.DATABASE_NAME,
                 'detect_types': Database.PARSE_DECLTYPES | Database.PARSE_COLNAMES,
diff --git a/django/db/models/base.py b/django/db/models/base.py
index 92519f7003..e2ba49ee8c 100644
--- a/django/db/models/base.py
+++ b/django/db/models/base.py
@@ -484,9 +484,7 @@ class Model(object):
         if isinstance(raw_field, dict):
             import warnings
             warnings.warn(
-                message = "Representing uploaded files as dictionaries is"\
-                          " deprecated. Use django.core.files.SimpleUploadedFile"\
-                          " instead.",
+                message = "Representing uploaded files as dictionaries is deprecated. Use django.core.files.uploadedfile.SimpleUploadedFile instead.",
                 category = DeprecationWarning,
                 stacklevel = 2
             )
@@ -496,9 +494,7 @@ class Model(object):
         elif isinstance(raw_field, basestring):
             import warnings
             warnings.warn(
-                message = "Representing uploaded files as strings is "\
-                          " deprecated. Use django.core.files.SimpleUploadedFile "\
-                          " instead.",
+                message = "Representing uploaded files as dictionaries is deprecated. Use django.core.files.uploadedfile.SimpleUploadedFile instead.",
                 category = DeprecationWarning,
                 stacklevel = 2
             )
diff --git a/django/newforms/fields.py b/django/newforms/fields.py
index bfff9fe8b0..77bd8cbe94 100644
--- a/django/newforms/fields.py
+++ b/django/newforms/fields.py
@@ -442,9 +442,7 @@ class FileField(Field):
             # We warn once, then support both ways below.
             import warnings
             warnings.warn(
-                message = "Representing uploaded files as dictionaries is"\
-                          " deprecated. Use django.core.files.SimpleUploadedFile "\
-                          " instead.",
+                message = "Representing uploaded files as dictionaries is deprecated. Use django.core.files.uploadedfile.SimpleUploadedFile instead.",
                 category = DeprecationWarning,
                 stacklevel = 2
             )