To find out which component to use for which task I took a look at
the supplied tutorials and played around with different components in
conjunction with Ibmonitor.

When I use a TIB_Query or a IBOQuery with "select *" and then scroll
forward via grid it seems that IBO fetches the records in parts and
then saves them in memory for scrolling backwards.

If you scroll through the whole set from the first to the last record
does IBO keep all them in memory or does it also releas some of them.

If so is there any other way to assure that scrolling through a large
dataset does no fill up the whole memory of a ws.

Thank's for your advise.

Regards,
Frank.