Example

of an

ILE

RPG

Program

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*..

1

...+...

2 ...

+...

3

...+

...

4 ...

+...

5 ...

+

... 6 ...

+...

7 ..

*

 

A

 

T.Name++++++RLen++TDpB

Functions++++++++++++++++++++*

 

A

 

 

R EMP_REC

 

 

 

 

 

 

 

 

 

 

 

 

A

 

 

EMP_NUMBER

 

5

 

 

TEXT('EMPLOYEE NUMBER')

 

 

 

A

 

 

EMP_NAME

 

16

 

 

TEXT('EXPLOYEE NAME')

 

 

 

A

 

 

EMP_RATE

 

5

2

 

TEXT('EXPLOYEE RATE')

 

 

 

A

 

 

K EMP_NUMBER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure

2.

DDS for Employee physical file

 

 

 

 

 

 

The

second file,

TRANSACT,

tracks

the

number

of

hours each employee wo

for

that

week

and

any

 

bonus that employee may have received. The

shows

the

format

of

a

 

transaction

record:

 

 

 

 

TRN_REC

TRN_NUMBER

TRN_HOURS TRN_BONUS

161016

*.. 1

...+...

...2

+...

3

...+

...... 4

+...

...5

+...

6 ...

+...

7 ..*

A

T.Name++++++RLen++TDpB

Functions++++++++++++++++++++*

A

 

R TRN_REC

 

 

 

 

 

 

 

 

 

A

 

TRN_NUMBER

 

5

 

TEXT('EMPLOYEE NUMBER')

 

A

 

TRN_HOURS

 

4

1

TEXT('HOURS WORKED')

 

 

A

 

TRN_BONUS

 

6

2

TEXT('BONUS')

 

 

 

 

 

 

 

 

 

 

 

Figure

3.

DDS for TRANSACT physical file

 

 

 

 

 

Each employee's pay is calculated by multiplying the "hours" (from th file) and the "rate" (from the EMPLOYEE file) and adding the "bonus" TRANSACT file. If more than 40 hours were worked, the employee is pa

1.5times the normal rate.

Control Specifications

*.. 1 ...+... 2 ...+... 3 ...+... 4 ...+... 5 ...+... 6 ...+... 7 ...+... 8 HKeywords++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

H DATEDIT(*DMY/)

Today's date will be printed in day, month, year format with "/" as

File Description Specifications

..*

1 ...

+...

2 ...

+...

3

...

+

... 4 ...

...+

...5

...+

...6

...+

...7

+...

FFilename++IPEASFRlen+LKlen+AIDevice+.Keywords+++++++++++++++++++++++++++

FTRANSACT

IP

E

 

 

K

 

DISK

 

 

 

 

 

 

 

FEMPLOYEE

IF

E

 

 

K

 

DISK

 

 

 

 

 

 

 

FQSYSPRT

O

F

80

 

 

 

PRINTER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

There are three files defined on the file description specificatio

Chapter 1. Overview of the RPG IV Programming7 Language

Page 31
Image 31
IBM AS/400 manual Program, Second file, File Description Specifications

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.