How do you view and edit data in a mysql DB? Lots of ways.
There's always commandline
mysql. This is how I do it around 50% of the time. But it could be better. ASCII-art table dumps are not the easiest things to read, and
readline-based history and editing only gets you so far.
But phpMyAdmin may have changed since last I used it, it's been a while.
There's the native mysql GUI, called
mysql-gui-tools in Gentoo. It's a standalone app that's pretty good, but the Linux version is gimped up compared to the Windows version for some strange reason. In any case it seems to be discontinued or something. There's some new MySQL Workbench thing coming, which I'll probably try once it hits Gentoo, but it looks like overkill for my simple needs.
SQuirreL SQL is another cross-platform GUI app. It connects to lots of different kinds of DBs (pretty much any DB that Java can talk to), so at work where I have get my mysql server to talk to someone else's MS SQLServer (ugh) I use this. But it's very heavyweight and not the most enjoyable interface.