Examination practice During writing a final thesis, you decide to implement a better note/info/material collecting tool for yourself. Every note has title, summary and body. Most important is categorization - you want to have unlimited depth of categories and sub-categories. And every note can belong to several categories. And of course you also want to add several comments to every note. Display your categories with statistics on the front page, including the latest note headline with summary. Display also overall info - how many top level categories, how many categories overall, notes overall. Search over catgeories and note content. Use real db.