E> (KSDS) OnE of thE accEss mEthods usEd by Ef="modulE.php?namE=LExikon&filE=sEarch&Eid=1&quEry=VSAM">VSAM. KSDS has indExEs and data split into CI (Control IntErval) in CA (Control ArEa) and multi indEx lEvEllEd. Forward and backward comprEssion is appliEd to kEy valuEs. (1999-01-11)