what is the difference between do while and do until?


No Answer is Posted For this Question
Be the First to Post Answer

Post New Answer

More RPG400 Interview Questions

What is the purpose of FRCDTA keyword?

3 Answers   IBM,


RETRIVING DELETED RECORDS :- I'm frequently asked how to retrieve deleted records from an unjournaled physical file when the deleted records have not yet been removed from the file. Utility UNDEL lets you undelete records in a physical file. This public domain program is available in CISC and RISC versions, and the complete source code is available for download at: UNDEL for AS/400 Save File (RISC): http://www.as400network.com/sharewarefiles/undelris.zip UNDEL for AS/400 Save File (CISC): http://www.as400network.com/sharewarefiles/undel.zip UNDEL for AS/400 Save File (Source code): http://www.as400network.com/sharewarefiles/undelsrc.zip The utility takes advantage of the fact that deleted records in physical files are only flagged as deleted, and the record data still exists until it is overwritten or the file is reorganized with a utility such as RGZPFM. UNDEL simply reads the deleted record, then reuses the record by writing over it with the new record (thus eliminating the flag for the deleted record). Some homegrown and commercial utilities copy the file containing undeleted records to a save file, then use a program to read the save file, which contains live and undeleted records, to a file to undelete the records. The UNDEL utility is superior to the SAVF technique because there's no need to copy the file to a save file, which is especially important for really large files. When run, UNDEL displays the physical file records in their unformatted, raw text form. You can either position the display to a given relative record number or use F19 or F20 to find the previous and next deleted record, respectively. The utility also includes online help, which is almost unheard of for free utilities. Other utilities include the ability to undelete records. You can use the RTVDLTRCD command in the old QUSRTOOL (no longer supported by IBM). QUSRTOOL is now a commercial product called TAA Productivity Tools ( http://www.taatool.com ). The free file editor WRKDBF has a built-in undelete capability ( http://www.wrkdbf.com ), and several commercial file editors can undelete records. For a complete list of file editors, go to http://www.sourcebook400.com, select "Programmer Tools" under "Product Category," then select "File Editors."

0 Answers  


How can we override a file during runtime in RPG? Without using OVRDBF or calling a CL program

1 Answers   UST,


Anyone help me for the below question:- If problem/error occur in *PSSR subroutine,how should I handel it in RPG program.

1 Answers  


What is significance of a file designated as a Primary file in Rpg400 program....also what's use of secoundry file

1 Answers  






write an RPG program to calculate the marks of 5 students (A,B, C, D, E)in 3 different subjects (eng, math, sci) an display on the screen

0 Answers  


what do you mean by an input subfile, what are the keywords required?

0 Answers   IBM,


can anybody help me to solve this problem. the program that i m checking display error message saying "Record format for file AJDSPFFD does not match model file and decimal error. how to solve this problem. The AJDSPFFD is snapshot the AJTLOG that is the audit trail list.

0 Answers  


difference betwen keywords and opcodes

3 Answers  


Can we found a record existance in a file w/o reading the file?

6 Answers   Traitsys Technologies,


If there are 1000 member(PGM type) in a SRC file. How can we compile in a CL program? ( It need to be done in a loop)?

1 Answers  


Thanks gagan for your answer,i'm new to as400,i don't know embedded sql in rpg.can you send me the coding for the below mentioned question in embedded sql rpg. how to retrieve particular field records from a physical file,say i have a physical file called 'employee' in it i have to retrieve the records of a field 'admin' present in pf 'employee' using rpg,but i should not use logical file or openquery file.

2 Answers   iGate,


Categories