Different target audience. MySQL originally targeted dot-com start-ups while PostgreSQL focused on being a reliable longer-term platform for established compani

Different target audience. MySQL originally targeted dot-com start-ups while PostgreSQL focused on being a reliable longer-term platform for established companies or niches. It's not going to hurt a web start up if they lose 1 out of every 5,000 customer transactions (posts), but that ratio would squash a financial application.