One thing nice about Numbers is that you don't worry about cells as an absolute coordinate system. Each table's unique, and you can add/remove rows without hit

One thing nice about Numbers is that you don't worry about cells as an absolute coordinate system. Each table's unique, and you can add/remove rows without hitting everything else. So, in a word, encapsulation. Also, the line between databases & spreadsheets is fairly thin, how about some relational calculus? Some import/export with SQL? Or a query language?