how to add a new field to a file without compiling it?
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how to know total no of records in pf with out using sql??????
how to update physical files using normal logical file
Q.1 how to implement the commitment control. 2.how to control commitment control from external program.
I want to change the attribute of field or want to add new field in existing PF but condition is format level identifier should not change, is it possible?
How to know the perticular record in pf with out reading?
How many libraries can be there in a library list?
what is open data base command
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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?
what is the purpus of the chain and setll and setgt ?
can we concate fileds in physical file? If yes how can we do?
How to find the list of source physical files in a library?? Is there any way to get a list??
Why journalling is compulsory before commitment control?
RPG400 
