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how to update physical files using normal logical file
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Answer / anand
in the above code file should be in update mode or file
addition mode
| Is This Answer Correct ? | 8 Yes | 0 No |
Answer / keshar jain
HI,
To Update physical file in RPG use opcode UPDATE.
example
FLF1 IF E k DISK
key1 Setll LF1
READ LF1
UPDATE LF1
Note: Logical file should be simeple logical file. We can't
update physical file with help of Join logical file.
| Is This Answer Correct ? | 9 Yes | 5 No |
Answer / anand
what Keshar Jain is saying is correct but open the logical file in update mode i.e FLF1 UF E k DISK
| Is This Answer Correct ? | 2 Yes | 0 No |
Hi,,Whatever code written above is right...but opcode for
update in rpg is 'updat'...so the right statement will be
Updat flf1
| Is This Answer Correct ? | 0 Yes | 5 No |
what is the difference between adding keys & constraints into a phisical file
Hi, Please give the answer to this question? I have Phisical file with 100 records,there is no any duplicate records in this pf.Based on this pf one Logical file i have used.But this lf is viewing only 80 records only of that pf?What is the reason for this?Please give me answer?
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how to restrict upon adding the data for field reference file in DB400
1. How can I create a LF using crtlf command based on a particular member in a multimember PF? Where I have to specify the member name? 2. How to differentiate between the types of join from a Join logical file DDS. Is it possible to have different types of Join Logical files? 3.Any performance difference between Opnqrf and Embedded SQL? When I should prefer Opnqryf and when SQL? 4. I know access path is the path chosen by the program to retrieve data. It can be of keyed access path or arrival sequence. *IMMED- *IMMED description says access path is updated each time record is added or deleted from a member. - What is updating here? *REBLD - The access path is completely rebuilt each time a file member is opened. The access path is maintained until the member is closed, then the access path is deleted. - I am not able to understand this completely. Could anyone explain these more clearly? 5.What is the purpose of using activation group. I know it is a resource allocator, but other than this any other benefits of using an activation group?
Suppose I have a pf, it contains 5 members, how to access particular member data from logical file? What is the use of member in pf?
Can we concatenate fields in physical file? If yes how can we do?
YOU CAN DELETE THE RECORD SPACE PERMENANTLY IN PHYSICALFILE THROUGH CL?
What is open data path? And what is the difference between access path and open data path?
Why we create the Physical File Member?
How can we handle errors in RPG?
RPG400 
