What is Subfiles AS400?

A subfile is a group of records that is read from or written to a display-device file. For example, a program reads records from a database file and creates a subfile of output records. When the entire subfile has been written, the program sends the entire subfile to the display device in one write operation.

How do I create a database in AS400?

Creating Physical and Logical files in AS400

1. Create a Physical File. To create a physical database file, enter your source statements in a DDS source file member.
2. Create a Physical File With Key Fields.
3. Create a Logical File To Resequence Order of Records.
4. Create a Logical File To Select and Resequence Records.

How do I create a display file in AS400?

STRSDA (Start Screen Design Aid) Start the screen design aid by using STRSDA and select option-1. Option-1 selection results into the screen below. Press ENTER and select option-1 to add new record. Option-1 provides the screen to add a new record to the display file.

How do you create a subfile?

1. (1)STRSDA.
2. (2)Take option-1.
3. (3)Take option-1 to ADD a record.
4. (4) Select the record type SFL and enter the subfile record name.
5. (5)Press ENTER, it will ask for subfile control record format:
6. (6)Press ENTER.
7. (7) Press ENTER and select SFLNXTCHG as ‘Y’ if it is needed in the program along with the indicators.

What are different types of Subfiles?

· A subfile has two record format:

• Subfile control record format.
• Subfile record format.
• Clearing the subfile control record format.
• Loading the subfile buffer with the relevant data.
• Displaying the data from subfile buffer to the display device.

How do you debug a batch job?

Use the Command Entry display to enter any debug commands, such as the Add Breakpoint (ADDBKP) or Add Trace (ADDTRC) commands. Press F3 to leave the Command Entry display, and then press Enter to start the batch job. When the job stops at a breakpoint, you see the normal breakpoint display.

Is AS400 a database?

The AS400 database is the structured collection of records or data on AS400 include an integrated DB2 database management system . AS400e Server is an IBM branding initiative for the AS400 server.

What is DBU database?

DBU allows users to view and update any file instantly without using time consuming queries, DFU or programming. Instantly access information on logicals, enable security and audit logs or view and update multiple files. Use DBU for secure access and audits for all your organization’s data.

How do you create a display file in Rpgle?

Ü F SPEC

1. File name: Mention here name of the file that you are going to use in your program.
2. File Type: Mention the file type as I,O,U,C where I= INPUT, O=OUTPUT,U=UPDATE,C=COMBINED.
3. File Designation: Mention the File Designation as P,S,F where P=PRIMARY,S=SECONDARY,F=FULL PROCEDURAL.

What is Sflsiz?

SFLSIZ value specifies the number of records that can be placed into the subfile buffer. If your program places a record with a relative record number larger than the SFLSIZ value into the subfile, the subfile is automatically extended to contain it (up to a maximum of 9999 records).

How to create subfiles in as / 400 chapter 9?

Press Enter to go back to the previous screen. Select Subfile display layout. On subfile maximum size type 9999 and on the number of records for page type 9: Press enter to go back. Select the option Select Record Keyword: Open the SFLCTL record. By default the record list is already visible on the design screen.

What is the length of an AS400 file?

A value ranging from 1 through 32766 bytes can be specified for the record length. AS/400 actually creates a file named HISTORY in library TEST, a member named HISTORY, and a field of length 100 that is named HISTORY. What is meant by DDS file?

Where can I find list of AS400 commands?

For eg: DSP* will give the list of all commands starting with DSP like DSPFD, DSPSYSSTS, DSPNETA, etc… AS400 / CL commands can be entered on the command line or executed from within a program. When commands are entered via a program or menu, the user selects options that are displayed in a more friendly, English-type format.

How many subfile Records in a display file?

· We can define at most 512 subfile records in a display file. · There can be 12 subfiles active at the same time. Here in the example we are creating one subfile record RECSFL and immediately after that there is a subfile control record RECCTL which has been associated with the subfile record with the keyword SFLCTL (RECSFL).