How can a screen field that has changed since the last output operation be detected ?

Attach the MDT attribute to the field, to detect whether field has been changed as a result of user input.

When will the message for field that has the ERRMSG keyword active not be displayed ?

If more than one ERRMSG keywords are active then the first will be active, because only one error message will be displayed at a time.

What is the use of OVRPRTF ?

Override with Printer file (OVRPRTF) command is used to override certain parameters of the printer files used in the program or to replace the printer file.

What are the two record formats that a subfile contains ?

Subfile record format(SFL), and subfile control record format(SFLCTL).

How to pick up the changed records every time in a subfile after the first change made ?

Seton SFLNXTCHG keyword indicator and update the subfile record.

How can the sign of a numeric be ignored when sequencing a logical file ?

By specifying the record level keyword UNSIGNED.

What is the purpose of OVRDTA and OVRATR keywords ?

OVRDTA keyword (field or record level) can be used to override the existing data contents of a field or record already on the display. OVRATR keyword (field or record level) can be used to override the existing display attributes of a field or record already on the display.

What is the Select and Omit criteria in AS400 logical files ?

This is used to specify rules for the Selection/Omission of records from a Physical File.

What is a Join Logical File, Can it be used for Update ?

Logical file that combines more than one physical file.Update is not possible through JLF.

Explain the purpose of AS400 KEEP and ASSUME keywords ?

KEEP : Keep the display from being deleted when the display file is closed. ASSUME : It is used to specify that the OS/400 program is to assume that this record is already shown on the display when this file is opened.

What is AS400 journaling and commitment control?

Journaling is a function which records the changes in a file in a journal. These record images are used to recover the changes in the file should the system ends abnormally. Commitment control is a function that allows you to define and process a no of changes to database files as a single unit (transaction).

What is the purpose of STRCMTCTL command ?

Starts commitment control for files that are being journal led.

Where is the variable for the SLNO(*VAR) keyword be defined ?

At run time before displaying the record format.

A Folder is a named object that is used as a directory for documents and other folders. Folders can be filed with in another folder.

How many libraries can be there in an AS400 library list?

Total 40 (15 system and 25 application).

How are the objects stored in AS/400?

All objects are stored on AS/400 in a single level storage. In this method all objects are referenced by one virtual address which is translated into a physical address whether it is an auxiliary storage or main memory.

How do you use DEBUG utility ?

STRDBG program-name UPDPROD(*YES)

What is the function of the SBMRJEJOB command?

Sends RJE input stream to host system.

What is the difference between Interactive & Batch jobs in AS400?

Interactive Job: Job started for a person who signon to a workstation. Batch Job: A predefined group of processing actions submitted to the system to be performed.

What is class of service ?

A set of link and node characteristics associated with a session.

How do you execute jobs in batch mode? SBMJOB

SBMJOB The Submit Job (SBMJOB) command allows a job that is running to submit another job to a job queue to be run later as a batch job.

What is the system part of IBM i Library List?

Where is the system part of IBM i Library List?

How will you display a particular page in subfile ?

Move a valid relative record number(RRN) in the field specified using SFLRCDNBR keyword in DDS.