What do you mean by RDW in VSAM?
Answers were Sorted based on User's Feedback
Answer / vinod
RDW stands for Record Descriptor Word.This is the first 4
bytes in a VSAM - Variable Record Length file that stores
the actual length of the record. This is hidden if you
browse a VSAM file. In a VB file, realistically the record
startsfrom COL 5 and NOT COL 1 as you see when you browse
the file.
| Is This Answer Correct ? | 12 Yes | 3 No |
Answer / e s hudders
VSAM does not use an RDW as control of the record lengths is handled by a cotrol area called an RDF which uis written at the end of the CI in VSAM after the CIDF that controls the free spae.
| Is This Answer Correct ? | 0 Yes | 0 No |
How do you convert flat files to VSAM files ?
State the differences between vsam and non-vsam files?
What is the Difference between LDS & ESDS ?
is there any lock for vsam file so that no one can update the vsam file ?
If FSPC(100 10 is specified does it mean that both the control interval and control area will be left empty because 100 % of both CI and ca are specified to be empty?
OPEN INPUT StudentFile READ StudentFile AT END SET EndOfStudentFile TO TRUE END-READ PERFORM UNTIL EndOfStudentFile DISPLAY StudentId SPACE StudentName SPACE CourseCode SPACE YOBirth READ StudentFile AT END SET EndOfStudentFile TO TRUE END-READ END-PERFORM CLOSE StudentFile STOP RUN what will be output
how to view clusters that has more than 10000 records
what will happen when you try to open an empty vsam file in a cobol program for input?
How do you define an ALTINDX ? How do you use ALTINDXs in batch, CICS pgm?s ?
Describe the uses of ams?
What does the keyranges parameter in define cluster commends do?
Define base cluster?