Common questions/problems faced by even the most advanced programmers are as follows:

• What is the proper library list set up for this environment? Environments can be set-up and used to separate data and programs for production and testing, for different operating departments such as marketing and finance and for separate companies sharing the same AS/400.

• What file(s) contain the information that I need to create this program or query?

• Is this file a production file or a work file?

• There is invalid data in one of the files, which programs update it?

• I had to make some changes to a file, which programs will I now have to recompile?

• Is there a logical file created already that has the key sequence that I need?

• When was the last time this object was used? Is it obsolete?

• Do other programs interact with this object?

• If I change this program’s parameter list, what programs call it that I will have to change also?

• Does a program/query already exist that performs this function?

• Does this object reside elsewhere on the system?

• How large is this object? If it is a file, does it need to be reorganized?