AdsTableOptions.AdsAOFType

atDynamic:

Filter membership is affected by modifications all users make to record data. Note: Dynamic filters are only supported when connected to the Advantage Database Server. If using the Advantage Local Server, dynamic filters will behave like keyset filters.

atKeySet:

Filter membership is only affected by updates from the filter owner (the table instance that set the filter). Updates made by other users will not affect a record’s membership in the filter unless another user modifies a record so that it no longer meets the filter condition and the filter owner refreshes that record. The refresh operation will cause a re-evaluation of the filter expression and the record will be removed from the filter.

atFixed:

Filter membership does not change. If other users modify records they will always remain visible within this fixed filter, even if the changes have modified field values such that the record no longer passes the original filter expression.