Answer / sairam

Using Chain we can set the pointer to the particular record
according the criteria specified in the chain operation. But
in this case, if the record is found then the pointer will
be set, otherwise i.e., if the record does not exist then
the pointer will not set. This is the reason why we check
with the %Found keyword. And moreover after reading the
record (in case if the record found and there are more
number of records with the same keyword), we can not move
to the another record, which meets the same criteria
specified in the Chain operation. So the conclusion is we
can not read more number of records with the Chain
operation, if there are more number of records exist with
the same criteria in the file.
Where as using READE, we can read all the records which meet
the same criteria using subsequent READE operation. If there
are no records with the specified criteria then the pointer
will be set to EOF.

Answer / pankaj

CHAIN=USED FOR THE RANDOM ACCESS OF THE RECORD IN THE DATA
BASE FILE.ITS EQUAL TO THE SETLL+READE.


READE=SET THE POINTER TO THR EQUAL KEY VALUE .

Answer / shikha

The CHAIN operation retrieves a record from a full
procedural file, sets a record identifying indicator on and
places the data from the record into the
input fields.If a file name is specified in name and access
is by key, the CHAIN operation retrieves the first record
that matches the search argument.

The READE operation retrieves the next sequential record
from a full procedural file if the key of the record
matches the search argument. If the key of the record does
not match the search argument, an EOF condition occurs, and
the record is not returned to
the program. If a READE operation is not successful, you
must reposition the file: for example,
using a CHAIN, SETGT, or SETLL operation.

Answer / remya

chain-This file operation is used to randomly retrieve a
record from a file.The factor 1 value is mandatory for chain
operation. The factor 1 value must be key field or RRN.Chain
operation=setll+reade. In the case of chain it will points
to a particular record, not store the value in the input
buffer.it will not read duplicate records.if the value not
found the "hi" indicator will turn on.

Reade-Reads equal records from a file when we use setll or
setgt.Reade operation alone will not work.In the case of
Setll+reade, the record will be pointed and store the value
in the input buffer.Then read equal records from a file
sequentially. it will read all the duplicate records. The
factor 1 value is not mandatory for reade,if used,the key
value must be in factor1.

Answer / mohan

reade--read the equal recd when u use setll or setgt
chain--used to get the rcd random sequenc
by using chain we can lock the recd and unlock the
rcd

Answer / chandu

simply say one word
chain = set the cursor give equal record
reade = set the cursor give duplicate records also

Answer / viney

chain is a combination of setll+read... dat is both pointer
is set on lower limit and then file is read.. dnt need 2
give different command 4 pointer set and read...

whereas reade will read d file sequentially at pointer set
2 value equal 2 reade.... in dis pointer can b set 2 a
specified/desired value but in chain by default pointer is
set at lower limit

Answer / vivek

Chain is used for random retrieval from a file basically
CHAIN=SETLL+READ
READE sequentially reads the next record in a full
procedural file if the key of that record matches the value
in factor 1 in read equal no pointer sets but in Chain
pointer sets on lower limit

suppose we have 10 members in physical file and i have to use 4 out of 10 so how can we read this in RPG

3 Answers   TCS,

what is flat file?

1 Answers   IBM,

How do you do indexing in a physical file?

2 Answers  

How can i check the object existance in RPG program without using QCMDEXC command.

7 Answers   IBM, JDA,

Is it possible to call a subfile using CL. IF yes.. kindly help me out with explanation...?

3 Answers  

I have learnt through Net that Debugging a Batch job involves 1. Submit the job with the HOLD (*YES) parameter: SBMJOB HOLD(*YES) or Hold the job queue that before submitting the job by using the HLDJOBQ command. 2. Determine the job name, user, and number of the submitted job by using the WRKSBMJOB command. 3. Type the Start Service Job command on your screen: STRSRVJOB JOB(job name/user/number) 4. Type the Start Debug command on your screen: STRDBG 5. Release the job in the jobq. Type WRKSBMJOB and then put a 6 beside the job to be released and press enter, or, if the job queue was put on hold, release the job queue with the RLSJOBQ command. 6. A display appears when the job is ready to start, saying that you can now begin debugging the job. Press F10 to show the Command Entry display. 7. Now you can start debugging by entering an Add Break Point command: ADDBKP 8.ENDDBG 9.ENDSRVJOB I tried this for RPG/400 Program and up to six steps of the above it's ok,but for me no source is displayed and i typed DSPMODSRC in Command line but still i can't see the sourceif i press F.10 and enter command ADDBKP i don't know how to add break points through it,usually i add break points using F.6 for Interactive job debugs,but since this is batch i don't know sir,Please help me out. I was asked this question in a interview,i know only RPG/400 and i’m asking for debugging of RPG/400 program only sir. or is it only possible to debug BATCH RPG ILE JOB and it is not possible to debug BATCH RPG/400 JOB kindly help me out sir

4 Answers   HSBC,

what is file information data structure?

2 Answers   IBM,

1.Suppose my file has 10 fields and I want to make the 2nd field Zeros in all records. And assume I have millions of records and I dont want to read each record and update the desired field with 0. Any other way to do this in one step operation? 2. Assume my file has 100 records and I want to see only first 10 records. Is this possible through LF? 3.I have 3 jobs A B and C. I want to submit B after successful completion of A and want to submit C after successful completion of B. Without using job scheduler or job queue, how can i do that through CL program? 4.What is difference between Bind by copy and bind by reference?

4 Answers   Virtusa,

1.WHAT IS WRONG WITH THE CODE BELOW? C CUSTNO CHAIN CUSTMAST IF %ERROR can any body find the wrong please? 2.What builtin function will you use to achieve the following functionality? C QTY IFLT *ZERO C QTY MULT-1 QTY ENDIF

5 Answers   CTS,

Hi, I am getting the error in RPG (All Record Formats for externally-described file ABCD ignored or dropped due to error; file ignored.) Please suggest any

2 Answers   Satyam,

what is ment by "MDT"

2 Answers   TCS,

Given the following code, what is the value of RESULT? DName+++++++++++ETDsFrom+++To/L+++IDc.Keywords+++++++++++++ D RESULT S 5 0 C EVAL RESULT = (2 + 3 * 2) ** 2 / 2

2 Answers