[fpc-pascal] Documentation for sqldb

[John]

Is there any documentation for the SQLDB components ?  I have put a fair
bit of effort in to looking round the FPC and Lazarus documentation and
wiki areas, and while there are a few helpful hints here and there,  I
have not been able to find any sort of  overview of how the components
are supposed to work, particularly once you try to update data.  While I
can make some guesses from looking through the source, it is really hard
to guess from that how the writer intended them to work, and the best
way to use them.

thanks,
John