HSQLDB is quite a reasonable RDBMS for small or single-user applications.
If I remember correctly, it only executes one thread at a time, and the only
isolation level is READ_UNCOMMITTED. But if you can live with that (eg. you
have a single-user or low-volume multi-user application), then it's pretty
good. I'm using it for client side staging databases in the application I'm
currently developing, although I'm targeting PCs, not PDAs etc.
> Is there any opensource database for small devices (mobiles, PDASs)
> similar to e.g. PointBase Micro
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>
> Thanks!