difference b/t dictionary{} and anydbm - they seem the same

[castironpi at gmail.com]

> > Are there any that aren't persistent?
>
>         SQLite -- when opening a "memory" database rather than giving it a
> physical file. {I'm a tad too busy to look up the format of the memory
> parameter, but it shouldn't be too difficult to find it}

What?  If I wanted to code string literals, I'd use exec.  Where's the
real one?