Random & dynamic access modes for indexed files in COBOL

Sheth Khushboo · New User Joined: 20 Jul 2007 Posts: 1 Location: Ahmedabad

what is the difference between random & dynamic access modes for indexed files in COBOL?

suny_sn1 · New User Joined: 26 Jun 2007 Posts: 6 Location: India

Hi, hopefully this will help

www.cs.uofs.edu/~mccloske/courses/cmps340/lecture_notes/cobol_files.html

chandracdac · New User Joined: 15 Jun 2007 Posts: 92 Location: bangalore

random access means direct access ie if we have the key then we can directly read that one .

dynamic mode means it is a mixture of both random and sequential access, ie
if we want to read the students of only passed out students of particukar year u have to read like this.

example: actually there are no .of students in the school who belongs to passouts of different years.i want to read read only 2007 passouts i have to skip the passouts up to 2006 and i have to read the students of 2007 in sequential to get all the details of 2007.so this is called dynamic mode of reading .
i think its understanding .

thanks
chandra