In the rest of this chapter, repeated reference is made to
query rows. What is meant by this is the rows
of data which a KBBlock retrieves from the server database; it may
be data retrieved directly from a table (select ... from
tablename) or it may be retrieved via a Rekall
query.
Whenever there is a need to identify a particular row, it is always
in terms of an index into this data, irrespective of what rows are
on display. Rekall will handle this; if you try to access the value
in a data control for a row which is not currently displayed, Rekall
will either ignore the operation or return a null value.