title: What is the different between save(), create() and update () in django rest framework?
body: <p>I m confused when making api on django rest framework using serializers, please tell me exact different between save(), create() and update() methods, my code sample is as follow,</p>
  
  <p><strong>View.py</strong></p>
  
  <pre><code>class AddUser(views.APIView):
      serializer_class = UserForAdminSerializer
  
      def post(self, request, *args, **kwargs):
  
          serializer = UserForAdminSerializer(data=request.data)
  
          if serializer.is_valid():
  
              serializer.save()
              return Response(serializer.data, status=status.HTTP_201_CREATED)
          return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
  </code></pre>
  
  <p><strong>serializers.py</strong></p>
  
  <pre><code>class UserForAdminSerializer(serializers.ModelSerializer):
  
      first_name = serializers.CharField(max_length=30)
      last_name = serializers.CharField(max_length=30)
      name = serializers.CharField(max_length=30)
      password = serializers.CharField(max_length=20, style={'input_type': 'password'})
  
      class Meta:
          model = User
          fields = ('id', 'url', 'first_name', 'last_name', 'name', 'username', 'email', 'password',
                    'total_exp_year', 'total_exp_month', 'voteup_count', 'is_featured',
                    'is_active', 'headline', 'description', 'profile_picture', )
  
      def create(self, validated_data):
          password = validated_data.pop('password', None)
          instance = self.Meta.model(**validated_data)
          if password is not None:
              instance.set_password(password)
          instance.save()
          return instance
  </code></pre>
  
  <p>on the above code in view.py file i m used save() method and serializers.py using save() or update() method so please explain me how it's working and clear my confusion between save() and create() </p>