I tired to use it. In the components subdirectory you can find dataset components for mysql, interbase, sqlite database. In my system (Mandrake 10.0 community) only the sqlite seems useable, but only if you set the databasename, active, etc. properties at runtime. But the behaivor of data components (datagrid) is very interesting in this case... IMHO the data-aware compontents are unuseable in lazarus at this monent :-((((