Problems trying to save to "POST"="no-such-table" database Django / Python

I'm following a course in Python and Django, and the problem starts when the course version is 1.1.2 and mine is 1.8.2

I was able to generate a form to save "Events", but when I click submit, it returns the following error:

    OperationalError at /adiciona/
no such table: agenda_itemagenda
Request Method: POST
Request URL:    http://127.0.0.1:8000/adiciona/
Django Version: 1.8.2
Exception Type: OperationalError
Exception Value:    
no such table: agenda_itemagenda
Exception Location: C:\wamp\www\curso python\aula\aula\lib\site-packages\django-1.8.2-py2.7.egg\django\db\backends\sqlite3\base.py in execute, line 318
Python Executable:  C:\wamp\www\curso python\aula\aula\Scripts\python.exe
Python Version: 2.7.9
Python Path:    
['C:\wamp\www\curso python\aula\aula\gerenciador',
 'C:\wamp\www\curso python\aula\aula\lib\site-packages\django-1.8.2-py2.7.egg',
 'C:\WINDOWS\SYSTEM32\python27.zip',
 'C:\wamp\www\curso python\aula\aula\DLLs',
 'C:\wamp\www\curso python\aula\aula\lib',
 'C:\wamp\www\curso python\aula\aula\lib\plat-win',
 'C:\wamp\www\curso python\aula\aula\lib\lib-tk',
 'C:\wamp\www\curso python\aula\aula\Scripts',
 'C:\Python27\Lib',
 'C:\Python27\DLLs',
 'C:\Python27\Lib\lib-tk',
 'C:\wamp\www\curso python\aula\aula',
 'C:\wamp\www\curso python\aula\aula\lib\site-packages']
Server time:    Fri, 5 Jun 2015 01:10:35 -0300

agenda.py

from django.db import models

class ItemAgenda(models.Model):
    titulo = models.CharField(max_length=100)
    data = models.DateField()
    hora = models.TimeField()
    descricao = models.TextField()'

views.py

    #-*- encoding: utf-8 -*-
from django.shortcuts import render_to_response
from django.template import RequestContext
# Create your views here.


from models import ItemAgenda
from forms import FormItemAgenda

def lista(request):
    lista_itens = ItemAgenda.objects.all()
    return render_to_response("lista.html", {'lista_itens': lista_itens})


def adiciona(request):
    if request.method == "POST":
        form = FormItemAgenda(request.POST, request.FILES)
        if form.is_valid():
            dados = form.cleaned_data
            item = ItemAgenda(
                    titulo=dados['titulo'],
                    data=dados['data'],
                    hora=dados['hora'],
                    descricao=dados['descricao']
                    )
            item.save()
            return render_to_response("salvo.html", {})
    else:
        form = FormItemAgenda()
    return render_to_response("adiciona.html", {'form': form},
        context_instance=RequestContext(request))

forms.py

from django import forms

class FormItemAgenda(forms.Form):
    titulo = forms.CharField(max_length=100)
    data = forms.DateField(
                widget=forms.DateInput(format='%d/%m/%Y'),
                input_formats=['%d/%m/%Y', '%d/%m/%y'])
    hora = forms.TimeField()
    descricao = forms.CharField()
# Create your models here.

list.html

{% extends 'base.html' %}
{% block corpo %}
<a href="/adiciona/"> Adicionar novo item </a>
<ul>
    {% for item in lista_item %}
    <li> 
        <a href="/item/{{ item.id }}">
            {{ item.data|date:'d/m/Y'}} - {{ item.titulo }}

        </a>
    </li>
    {% empty %}
    <li> Sem itens na lista</li>
    {% endfor %}
</ul>
{% endblock %}

add.html

{% extends "base.html" %}

    {% block corpo %}

    <form action="" method="post">
        {% csrf_token %}
        {{ form.as_p }}
        <button type="submit">Adicionar</button>

    </form>

    {% endblock %}