   ,    Oracle  ,     bitmap-    :
CREATE BITMAP INDEX persons_hair_color ON persons(hair_color); CREATE BITMAP INDEX persons_eye_color ON persons(eyer_color);
,        ,    Oracle  :
SELECT first_name , last_name , gender FROM persons
WHERE hair_color = 'BLONDE' AND eye_color  = 'BLUE1;
     Oracle              AND. :
000000000101000010000010000
AND 000 10001 00000 1000000QQOOOOQ
000000010000000000000000000
    ,        .    ,       , ,  ,     bitmap-   ,  ,  ,     ..
    Oracle  "" ,   *-.  ,                    ROWID.     Oracle6    ,  , . Bitmap-    , ,   ,   .  ,  bitmap-   ,       .
   bitmap-     ,    ,      (, ,     ).           (..       ). ,  ,    ,          ,            .            -
4.  ""  Oracle8	81