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| AS400 Interview Questions and Answers part 29 |
Q1:What is DDM?
Answer: Distributed Data Management is a function of the OS/400 that allows an application program or user on one system to use database files stored on remote systems.
Q2:Name few IBM supplied libraries?
Answer: QGPL, QTEMP, QSYS, QUSRTOOL, QCBL, QRPG
Q3:How many libraries can be there in library list?
Answer: Total 40(15 system and 25 application libraries)
Q4:Can fields be concatenated in a logical file level?
Answer: Yes, by using CONCAT keyword.
Q5:What is Job description?
Answer: A JOBD defines an environment in which a batch or interactive job executed.
Q6:What are the 2 main attributes that govern the execution of a job?
Answer: Run time priority and Time slice.
Q7:What is a Job log?
Answer: A job log is a file that contains a detailed record of the execution details of a job. It is comprised of both system and application messages. By examining job logs, you can see the life cycle of a batch job, including output from the batch applications themselves.
Q8:How to create files dynamically without DDS?
Answer: OPNQRYF.
Q9:What is he purpose of OPNQRYF?
Answer: OPNQRYF is used to select certain records of the database files based on the QRYSLT(Query select) condition.
Q10:What command must be executed before executing OPNQRYF command?
Answer: OVRDBF (Override database file).