Valid

WORKSTN

File

Operations

 

 

 

¹

No

indicators are passed

to

or

from

the

program.

 

 

 

¹

No

function

key

indicators

are

defined.

 

 

 

 

 

 

¹ The

record is written to

the display

 

beginning

in

position

2

of

 

line.

 

 

 

 

 

 

 

 

 

 

 

 

Input File

 

 

 

 

 

 

 

 

 

 

 

 

For

an

input

file,

the input

record, which

is treated by the

OS/400

a single input field, is initialized

to blanks when the file is

opene

positioned at

the

beginning

of the

field,

which

is

position

2

on th

Output File

For an output file, the OS/400 device support treats the output reco characters to be sent to the display. Each output record is writt sequential record in the file; that is, each record displayed over record displayed.

Combined File

For a combined file, the record, which is treated by the OS/400 d single field, appears on the screen and is both the output record record. Device support initializes the input record to blanks, and t placed in position 2.

For more information on program-described-display-device Datafiles,Man-see the agement manual.

Valid WORKSTN File Operations

Table 28 shows the valid file operation codes for a WORKSTN file.

Table 28. Valid File Operation Codes for a WORKSTN File

File

Description

 

 

 

Calculation

Specifications

Positions

Specifications

 

 

 

 

 

 

 

 

 

 

 

Positions

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

17

 

18

 

 

 

 

 

 

 

26-35

 

 

 

 

 

 

 

 

 

 

I

 

P/S

CLOSE,

ACQ, REL, NEXT, POST, FORCE

 

 

 

 

 

 

 

 

 

 

 

 

I

 

P/S

WRITE 1,

CLOSE,

ACQ,

REL,

NEXT,

POST,

FORCE

I

 

F

READ,

OPEN,

CLOSE,

ACQ, REL,

NEXT, POST

 

 

 

 

 

 

 

 

 

 

 

C

 

F

READ,

WRITE 1,

 

EXFMT

2,

OPEN,

CLOSE,

ACQ, REL, NEXT,

 

 

 

POST,

UPDATE

3,

CHAIN3,

READC 3

 

 

O

 

Blank

WRITE 1,

OPEN,

CLOSE,

ACQ,

REL,

POST

 

Notes:

1.TheWRITE operation is not valid for a program-described file used with name.

2.

If EXFMTthe operation

is used,

the

file must be externallyE in positiondescribed (a

19

of the

file description

specifications).

3.

For

subfile

record

formats,UPDATE CHAINthe,

andREADC operations are also valid.

The following further explains the EXFMT, READ, and WRITE operation code when used to process a WORKSTN file.

Chapter 18. Using WORKSTN Files341

Page 364 Page 366
Page 365
Image 365
IBM AS/400 manual Valid Workstn File Operations, Input File, Output File, Combined File
Page 364 Page 366

AS/400 specifications

The IBM AS/400, now known as the IBM iSeries, is a midrange computer system that has been a cornerstone of enterprise computing since its introduction in 1988. Designed to provide a robust platform for business applications, the AS/400 is celebrated for its reliability, scalability, and integrated database capabilities.

One of the key features of the AS/400 is its Integrated Operating Environment, which blends hardware and software resources seamlessly. This integration allows businesses to execute diverse workloads, ranging from traditional applications to modern web-based services, all on a single platform. The operating system, OS/400 (now IBM i), offers a rich set of APIs and tools for developers, simplifying application development and management.

Another standout characteristic of the AS/400 is its built-in database, DB2 for i. This powerful relational database management system allows for efficient data handling and provides advanced features such as support for SQL, XML, and JSON, making it easier for businesses to manage their data and integrate it with other systems. The database's tight integration with the operating system enables high performance and security.

In terms of scalability, the AS/400 can accommodate small businesses as well as large enterprises, with the ability to support hundreds of users simultaneously. Its architecture allows for easy upgrades in hardware, meaning that organizations can scale their systems without replacing the entire infrastructure.

Security is another critical attribute of the AS/400. With a sophisticated security model, it offers built-in user authentication, access control, encryption, and auditing capabilities to protect data and applications from unauthorized access.

The AS/400 also supports multiple programming languages, including RPG, COBOL, Java, and PHP, giving organizations the flexibility to choose the development tools that best fit their needs. This diversity helps maintain legacy applications while also developing new ones that leverage modern technologies.

Moreover, the platform supports both traditional green-screen interfaces and modern graphical user interfaces, allowing organizations to transition smoothly into contemporary user experience paradigms.

Overall, the IBM AS/400 stands out as a resilient, flexible, and secure computing platform that enables organizations to effectively manage their business operations, streamline processes, and adapt to changing market demands. Its unique combination of integrated features and capabilities ensures that it remains relevant in today's fast-paced technology landscape.
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