What are different types of Subfiles?

What are different types of Subfiles?

Two subfiles can be displayed at the same time. The DDS for a subfile consists of two record formats: a subfile-record format and a subfile control-record format. The subfile-record format contains the field information that is transferred to or from the display file under control of the subfile control-record format.

What is Readc Rpgle?

READC (Read Next Changed Record)

What is Subfiles as400?

A subfile is nothing but just displaying records in tabular format on a display device. · It can be an editable tabular format due to which it can be used in data entry screen, inquiry(static) screen or combination of both i.e. editing the information for a particular inquiry.

How do I create a subfile in Rpgle?

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 is Infds in Rpgle?

A file information data structure (INFDS) can be defined for each file to make file exception/error and file feedback information available to the program or procedure.

Which indicator is responsible for no record found in chain opcode?

You can specify an indicator in positions 71-72 that is set on if no record in the file matches the search argument. This information can also be obtained from the %FOUND built-in function, which returns ‘0’ if no record is found, and ‘1’ if a record is found.

What is data structure in Rpgle?

The ILE RPG compiler allows you to define an area in storage and the layout of the fields, called subfields, within the area. This area in storage is called a data structure. You define a data structure in free form by specifying the DCL-DS operation code followed by the data structure name and keywords.

What is multi occurrence data structure in Rpgle?

Multiple Occurrence Data Structures by default behave the same as in RPG/400. The current occurrence is initially set to the first and can be changed using the OCCUR operation code or %OCCUR function. They can be declared using the DCLDS command.

What is chain e in Rpgle?

The CHAIN command does a SETLL and a READE in order to find a match. CHAIN is best used to locate a unique record (like a customer record) from a full procedural file. To handle CHAIN exceptions (file status codes greater than 1000), either the operation code extender ‘E’ or an error indicator at LO level can be used.

How is D * D * s1rcdnbr defined in RPGLE?

During subfile loading, D* S1LINE is incremented by one for each record written. D* D* S1RCDNBR is defined using the DDS keyword SFLRCDNBR seen on D* the subfile’s control record.

Which is true of a single page subfile?

A single page subfile is a SCREEN OF DISPLAYED DATA, loaded one page at a time. The displayed data is equal to the maximum number of records that can be displayed at a time. In other words, in a single page subfile, all loaded records are displayed at a time.

How to position a subfile to a page?

To position to a page, specify that the page D* of the subfile to be displayed is the page containing the record D* whose relative record number is in this field. The default D* behavior is governed by moving S1LINE into S1RCDNBR after each load.

What are the three parts of a subfile?

· A subfile’s process can be divided mainly into 3 parts: 1 1. Clearing the subfile control record format. 2 2. Loading the subfile buffer with the relevant data. 3 3. Displaying the data from subfile buffer to the display device.