Are index files or relative file stored in VSAm

EnjoyMF · New User Joined: 27 May 2005 Posts: 88

hi all,

I normal mainframe cobol (vscoobl) where there be index files or relative file used.

i heard that index files or relative file are used when we have VSAm.

Thanks n Regards
Prasad

yaju4ever · New User Joined: 30 Sep 2006 Posts: 19 Location: mumbai

welll as per my knowledge we can access randomly and dynamically to records in RELATIVE and INDEX file through Relative record no and record key by defining the files as RRDS and KSDS....so it provides faster access .....suppose u want to search an item in thr range of 1000 to 3000
so u can directly go to 1000th record randomly and can access records sequentially onwards....this is dynamic access .....so this is not possible in sequential file.....correct me if i am wrong

cobolunni · Posted: Sun Dec 10, 2006 11:32 am

yes for implimenting index and relative files we need vsam data set in vscobol.

pretty · New User Joined: 13 Mar 2006 Posts: 6

please reply it is urgent