At last someone has done a comprehensive analysis of apples
and oranges :)
While I won't disagree with your results, I suggest these
paragraphs should be included:
MySQL is not a flat file, it is a relational database.
It is good at things that relational databases do well,
such as retrieving related rows from multiple tables at
once.
Flat files are not relational databases. They are good
at things such as writing data sequentially to the end of
a table or retrieving data with ad-hoc structure.
Don't use flat files when you need a relational database;
you'll spend endless time implementing things that you can
have for free by using the right data manager. Similarly,
avoid making your relational database stand in for a simple
flat file unless you will need relational capabilities on
the data stored in the file later.
