Write a Management System for a news portal. The system should support the following operations:
Create a topic Delete a topic List all topics Show a specific topic
Create an article for a topic Delete an article List all articles from a topic Show a specific article
The domain objects have the following attributes:
A topic has a title and a list of assigned articles. An article has a title, an author and a text.
The system should be implemented with RESTful web services and stored in a database (it is ok to just implement the wrapper and mock the database for the tests). Please also create some unit tests; a complete code coverage is not necessary. All protocols should be JSON format and needs to be implemented as objects.