Well... They are registers, so yes. The question is whether it'd make sense to do it and what problem would that solve.
In a past life, I taught young programmers you can, of course, make a phone number a numeric field in your database (and save a couple bytes by doing that!) but it'd only make sense if you wante to figure out the average phone number for all your clients so you could call them all at once.
There are extreme cases where it would actually make sense, but that I usually left to dig into in a later discussion.
alt Hacker News
Well... They are registers, so yes. The question is whether it'd make sense to do it and what problem would that solve.
In a past life, I taught young programmers you can, of course, make a phone number a numeric field in your database (and save a couple bytes by doing that!) but it'd only make sense if you wante to figure out the average phone number for all your clients so you could call them all at once.
There are extreme cases where it would actually make sense, but that I usually left to dig into in a later discussion.