What is the difference between RPG/400 and RPG4
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how can you display specific subfile page on the screen in unequal subfile?
suppose i i am changing / updating record of subfile and i want to change the record in reverse order . means i want to change the bottom record first and so on through readc . how i do it please any one explain .
what is the difference between do while and do until?
what is use of sflnxtchg and use of MDT(modify data tag).both r same r not and can we use these on dspf and subfile.
1)how to do date validation in rpg? 2)how to delete dUPLICATE RECORDS?
Mr.Sidc sirfor my question{how to convert date format from one format to another i think in CL/400 its CVTDAT,Please tell in RPG/400 sir not in RPGILE} you have answered using MOVE opcode,can you illustrate me with a small example sir very kind of you.
If the last record of a file has been read, and the next operation on that file is a READ operation, what will be the values of the input fields for that file? A. They will be blank and/or zero. B. They will be null. C. They will equal the values of the first record in the file. D. They will equal the values of the last record read.
without logical file we cannot access the data in physical file.but we specify physical file in the program(ie:- Ffile IF E k disk).how can it be accessed?
i 'm new to as/400.in an interview i was asked this question.give a practical example for passing information or data through local data area. I know only that data area is an object used to store tiny bits of data or it can store one value at a time and it is used to store frequently changing values or datas.thats all i know about data area can any one tell me how local data area and user defined data area are used to pass data between jobs with a example or coding.thanks in advance.
In a particular program one file is used where override command is applied to a file, now this program calls another program where we want to use the same file but without override.How it can be done?
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?
I have some doubts on subfile----------- -----I wrote a prog on subfile to display the records. Every thing is clear but i defined a field called "opt" as input field in subfile record format from that input field i wish to enter into new screen called "EDIT" which i created it as a separate RCD in display file. i gave opt as 2 for edit just like in WRKMBRPDM screen please telll me the code and how can i code for it in RPG.
RPG400 
