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CHAIN

CHAIN

PLIST, CALL, TFRCTL

PLIST, CALL, TFRCTL

The different types of Data Areas are general data AREA, local data area, GROUP data area, pip (program initialization parameter data area) data area.

*General Data Area - It can be created by USER implicitely or explicitly
It can be referred by any other jobs.
It can be associated with a library.
It can be created, deleted by the user.

* Local Data Area - It can not be referred by any other job.
It is AUTOMATICALLY created and deleted by the system.
It is not associated with any library.

*Group Data Area - It is automatically created and deleted by the system We can access the group data area value through clp.
It is meant for group jobs.

*Pip Data Area - It is meant for pre start jobs.

The different types of Data Areas are general data area, local data area, group data area, pip (program initialization parameter data area) data area.

*General Data Area - It can be created by user implicitely or explicitly
It can be referred by any other jobs.
It can be associated with a library.
It can be created, deleted by the user.

* Local Data Area - It can not be referred by any other job.
It is automatically created and deleted by the system.
It is not associated with any library.

*Group Data Area - It is automatically created and deleted by the system We can access the group data area value through clp.
It is meant for group jobs.

*Pip Data Area - It is meant for pre start jobs.

With the help of 'IN' OPCODE, we can access the data area RECORD in to the PROGRAM.

With the help of 'IN' opcode, we can access the data area record in to the program.

In order to CONTROL the logic FLOW, we can use INDICATORS in RPG.

In order to control the logic flow, we can use indicators in RPG.

By USING a COMMAND WRKOBJLCK.

By using a command WRKOBJLCK.

If you specify the LETTER ' U ' at column 73-74, you need to be open and close files explicitly in a RPG PROGRAM.

If you specify the letter ' U ' at column 73-74, you need to be open and close files explicitly in a RPG program.

DISPLAY FILES, PRINTER files, discket files, TAPE files ETC. ,

Display files, printer files, discket files, tape files etc. ,

* In order to refer the NAMED record format as a subfile record format in the PROGRAM.
* In order to rename the record format of a DATABASE file in a program.
* In order to define a named data STRUCTURE as a file information data structure.

* In order to refer the named record format as a subfile record format in the program.
* In order to rename the record format of a database file in a program.
* In order to define a named data structure as a file information data structure.

There are seven specifications exits in RPG/400. They are listed below:

1. HEADER Specification
2.  FILE Description specification
3.  Extension specification
4.  Line COUNTER specification
5.  Input specification
6.  Calculation specification
7.  OUTPUT specification

    

There are seven specifications exits in RPG/400. They are listed below:

The RECORDS will be ACCESSED the way in which records are ADDED to PHYSICAL file.

The records will be accessed the way in which records are added to physical file.

SBMJOB COMMAND.

SBMJOB Command.

Batch job begins, runs & CONTINUES to execute INSTRUCTIONS without HUMAN intervention or control while.
Interactive job are user driven.

Batch job begins, runs & continues to execute instructions without human intervention or control while.
Interactive job are user driven.

A LOGIC the compiler SUPPLIES is called RPG FIXED Logic CYCLE.

A logic the compiler supplies is called RPG Fixed Logic Cycle.

READ, SETLL, SETGT, READE, READP, READPE CHAIN, KLIST, KFLD, EXCPT & WRITE.

READ, SETLL, SETGT, READE, READP, READPE CHAIN, KLIST, KFLD, EXCPT & WRITE.

The LOKUP OPCODE SEARCHES the FACTOR1 entry in table or array.

The LOKUP opcode searches the Factor1 entry in table or array.

EXCPT.

EXCPT.

GT, GE, LT, LE & EQ.

GT, GE, LT, LE & EQ.

It COMPARES Factor1 with Factor2 & if CONDITION is true, control is transferred to label DESIGNATED in the RESULT field. The label specified MUST appear as the Factor1 of a TAG operation somewhere in the program.

It compares Factor1 with Factor2 & if condition is true, control is transferred to label designated in the result field. The label specified must appear as the Factor1 of a TAG operation somewhere in the program.

INDICATORS are INBUILT CLASS of VARIABLES for RPG.

Indicators are inbuilt class of variables for RPG.

*ENTRY PLIST PARM

*ENTRY PLIST PARM

*ZERO,*BLANK, *ZEROS, *BLANKS, *HIVAL, *LOVAL, *OFF, *ON & *ALL.

*ZERO,*BLANK, *ZEROS, *BLANKS, *HIVAL, *LOVAL, *OFF, *ON & *ALL.

Prompt depending upon type, shows right HAND side DATE & LEFT hand side the line NUMBER.

Prompt depending upon type, shows right hand side date & left hand side the line number.

4 Types they are ENTRY, Menu, INFORMATION & LIST Display.

4 Types they are Entry, Menu, Information & List Display.

EQ (EQUAL to)

EQ (Equal to)

Skip before leaves the SPECIFIED no. of LINES moving to the next page while Space before leaves the specified no. of lines on that page.

Skip before leaves the specified no. of lines moving to the next page while Space before leaves the specified no. of lines on that page.

FLAT File: - F (FIXED Length) Other File: - E (Externally DESCRIBED)

Flat File: - F (Fixed Length) Other File: - E (Externally Described)

8 because of the OVERFLOW INDICATORS OA-OG & OV.

8 because of the overflow indicators OA-OG & OV.

RUNQRY SHOWS the OUTPUT always in RRN (RELATIVE Record Number) & not in keyed SEQUENCE.

RUNQRY shows the output always in RRN (Relative Record Number) & not in keyed sequence.

It OVERRIDES the PF TEMPORARILY for a JOB.

It overrides the PF temporarily for a job.

WRITE & READ.

Write & Read.

CA: - It does not RETAINS the value into the BUFFER memory. CF: - It retains the value into the buffer memory.

CA: - It does not retains the value into the buffer memory. CF: - It retains the value into the buffer memory.

EXSR is a CONDITIONAL BRANCHING while a GOTO is an UNCONDITIONAL branching.

EXSR is a conditional branching while a GOTO is an unconditional branching.

There are 7 SPECS in RPG they are H, F, E, L, I, C & O.

There are 7 Specs in RPG they are H, F, E, L, I, C & O.

Printed output ITEMS PLACED in an output QUEUE are known as spooled FILES.

Printed output items placed in an output queue are known as spooled files.

In I SPECS.

In I Specs.

RPG, CL, PF, LF, PRTF & DSPF.

RPG, CL, PF, LF, PRTF & DSPF.

USE the START Source ENTRY Utility command (STRSEU) Option 8 from STRPGMMNU Through PROGRAM DEVELOPMENT Manager (PDM)

Use the Start Source Entry Utility command (STRSEU) Option 8 from STRPGMMNU Through Program Development Manager (PDM)

*FILE

*File

SOURCE Physical File CONTAINS members who CONTAIN source statements & Physical File contains members, which contain DATA.

Source Physical File contains members who contain source statements & Physical File contains members, which contain data.

A LIBRARY is a system object that serves as a DIRECTORY to other OBJECTS or collection of object.

A library is a system object that serves as a directory to other objects or collection of object.

Both are same only DIFFERENCE is DFU allows you to add or CHANGE selected FIELDS.

Both are same only difference is DFU allows you to add or change selected fields.

Add/Update/Selected or all FIELDS.

Add/Update/Selected or all fields.

No.

No.

A join Logical File can be BUILT over the TWO PF’s, with the PF’s ‘JOINED’ by a COMMON key value. It is available for read ACCESS.

A join Logical File can be built over the two PF’s, with the PF’s ‘joined’ by a common key value. It is available for read access.

DSPFD (F4) *ACCPTH(ACCESS PATH).

DSPFD (F4) *ACCPTH(Access Path).

DSPDBR (DISPLAY DATABASE RELATIONSHIP)

DSPDBR (Display Database Relationship)

By DEFINING the UNIQUE KEY.

By defining the unique key.

A LOGICAL FILE is an ACCESS PATH to the PHYSICAL File.

A Logical file is an Access path to the Physical File.

Defining more than one KEY as a key field in PHYSICAL file.

Defining more than one key as a key field in physical file.