Answer / srini

Sort the file based on key in descending order. You can
read the file in reverse order.

Answer / shrik

Reading the records into a buffer (array) and using it in
reverse order would be the first idea that comes to mind but
that way doesnt work for file with millions of records.

Answer / satty

we can read file in reverse order by using a dynamic array.
first transfer the ps into array and read it by -1 from
counter = no of records in the file

Answer / mahendra.ch

first we can move the records to an occurs

then

we can solve this problem by using perform varing 1 by -1
until i=0

hear i = number of racords.

iam shure it works.

thank you....

Answer / dimpy19

//STEP0100 EXEC PGM=SORT
//SYSOUT DD SYSOUT=*
//SORTIN DD DSN=YOUR INPUT DATASET,DISP=SHR
//SORTOUT DD DSN=YOUR OUTPUT FILE IN REVERSE ORDER,
// DISP=(NEW,CATLG,DELETE),UNIT=SYSDA,
// SPACE=(CYL,(X,Y),RLSE)
//SYSIN DD *
INREC FIELDS=(1,80,SEQNUM,8,ZD)
SORT FIELDS=(81,8,ZD,D)
OUTREC FIELDS=(1,80)
/*

Answer / laxmaiah

i have some knowledge in flat files,
(open input file-name reversed)
in this type use read the data in reverse order
AND write another file

Answer / pa

Being a flat file, we cant be sure that it will have a unique key field. So, External to the cobol program , using SORT utility, we can add a serial no column, and then SORT it in descending order based on that column and read the file sequentially in COBOL program.

Answer / dimpy19

1. Using FileAid

//STEP0100 EXEC PGM=FILEAID

//SYSPRINT DD SYSOUT=*

//DD01 DD DSN=YOUR INPUT DATASET,DISP=SHR

//DD01O DD DSN=YOUR OUTPUT FILE IN REVERSE ORDER,

// DISP=(NEW,CATLG,DELETE),UNIT=SYSDA,

// SPACE=(CYL,(X,Y),RLSE)

//SYSIN DD *

$$DD01 COPYBACK

/*

Answer / dimpy19

When REVERSED is specified, OPEN statement execution positions the QSAM file at its end. Subsequent READ statements make the data records available in reversed order, starting with the last record


Open INPUT filename REVERSED

Answer / sravani

using rrds it is possible. we can count the no of records using rrds key. by using if we can decrement from last to first

The maximum number of dimensions that an array can have in COBOL-85 is ?

11 Answers  

what are the working storage fields in BMS macro?

2 Answers   IBM,

Extract only those records from a PS file which are having word 'TEXT' in the records using COBOL? The word TEXT is not present in a particular position in all the records.

2 Answers   RBS,

how can we apply for HSBC exam(Mainframe) in India??? i went to their site and was told to submit my CV ,. etc..( totally confusing...)

0 Answers   HSBC, Quest,

What are the ways you can generate a copybook?

2 Answers  

Explain about level numbers?

3 Answers  

what is the use of comp2 ? where can we use it with example ?

3 Answers   Covansys,

If we put three reads in COBOL in the same para one after the other, to read a PS file,will it read the same record thrice or it will read three records sequentially? For example : Input File 01 02 03 Para 900 Read infile Display Infile rec Read infile Display infile rec Read infile Display infile rec. What will be the output?

2 Answers  

01 a pic x(6) value is abcdef 01 b pic x(3) move a to b wht will be the value in b ?

3 Answers   Patni,

i want to enter the name 'pandu' into ur table how?

1 Answers   Fidelity,

C1 C2 C3 are three conditions whose TRUTH values are as folloes. C1-TRUE C2-FALSE C3-TRUE A,B,C are defined as given below A:C1 AND(NOT C2) OR C3 B.(NOT C1) OR (NOT C2 AND NOT C3) C.(C1 OR C2)AND C3 D.C1 AND C2 OR C3 given the above information which of the following statements are valid? a.only A,B and C are TRUE b.only A,C and D are TRUE c.A,B,C and D are TRUE d.only C and D are TRUE

1 Answers   TCS,

What are the pertinent COBOL commands?

0 Answers   Satyam,