Indicates that Oracle Rdb should attempt to store a record in a way
    that optimizes access to that record via the indicated path.

    If the index named is a hashed index, the storage area named must
    have a MIXED page format. If the hashed index definition and the
    storage map for the relation designate the same storage area,
    then the record is stored on the same page as the hashed index
    node. Otherwise, Oracle Rdb uses the same relative page within the
    data storage area as the target page.

    If the index named is a sorted index, Oracle Rdb finds the dbkey of
    the next lowest record to the one being stored and uses the page
    number in the dbkey as the target page.