Why data access is faster in RRDS

sand · New User Joined: 20 Nov 2005 Posts: 19

Hi All,
In comparison to ESDS and KSDS why data access is faster in
RRDS?????

Thanks & Regards.
Sand.

khamarutheen · Active Member Joined: 23 Aug 2005 Posts: 677 Location: NJ

Hi Sand,

When compared to ESDS and KSDS, RRDS is faster since the RRN is alternative reason and in RRDS the entire data set is a string of fixed length slots. Record in an RRDS may be inserted,retrived,updated and deleted both sequentially and randomly. In general RRDS is like a Direct File.

sand · New User Joined: 20 Nov 2005 Posts: 19

Hi All,

Suppose ESDS/RRDS/KSDS all 3 files are having same 10 records.
I want to get the 5th record (for KSDS by the key value/for RRDS by the RRN/for ESDS by RBA).Which file will access the 5th record faster & how????????

Thanks
Sand.

dpkeee · New User Joined: 19 Jun 2006 Posts: 2

Hi,

I have a vsam file, with key as store po and store name.
I know only the store PO.
So i want to use partial key concept of vsam files to do it. Can any body tell me where can i get the code for this.

Thanks,
dpkeee

khamarutheen · Active Member Joined: 23 Aug 2005 Posts: 677 Location: NJ

Sand,