F = T ∇ Sτ

A phenomenon of document-oriented databases is quite interesting - many software developers face problems there this kind of databases is an excellent choice, but these developers don't use them and reinvent the wheel using relational or object-oriented databases. Difficult to say why it happens - because of ignorance, fear of performance problems or desire to reinvent own wheel, but this situation widely spread over the world. Fortunately, the common sense is prevailing, and NoSQL movement prove it. I have a serious experience with IBM Lotus Notes/Domino , and one of the most interesting features for me on first stages of its studying was saving application design in the documents. Thus the deployment of Lotus Notes database is incredibly easy - one just have to copy NSF-file to another location and it's ready for use (not always, but for trivial cases it's enough). Sometimes it can be a really useful feature, especially during prototyping, but not so many document-orie...

Security is most valuable feature of any software, and each developer should keep in mind security issues during programming. In this article I show how to restrict user's access to view, but not modify objects in Django project. It could be an equivalent of 'Readers' field in Lotus Notes/Domino application. First of all, let's set up Django . Check out Django’s main development branch (the ‘trunk’) like so: svn co http://code.djangoproject.com/svn/django/trunk/ django-trunk Install it: cd django-trunk sudo python setup.py install Create project, which be called 'secure_site': django-admin.py startproject secure_site Test the installation - start our project: cd secure_site/ chmod +x manage.py ./manage.py runserver 9000 Open browser by URL: http://localhost:9000/ and if 'It worked!' page is shown, then go further. Create two applications - sample (for testing) and secure (for handling security information): ./manage.py startapp sample ....