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?

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?

Virtusa,

1. If my rpg program has a date field, What extra care I have to take while compiling that RPG program? 2. If the file is keyed and I have declared the file as well as Key list properly in my program. Still am getting an error message like "Chain/reade operation is not allowed" What may be the case?

Virtusa,