Running a Program From a Menu-Driven Application

A*****************************************************************

A* DESCRIPTION: This

is the

DDS

for the physical file EMPMST.

*

A*

It

contains

one

record

format

called EMPREC.

*

A*

This

file contains one

record

for each employee *

A*

of

the company.

 

 

 

*

A*****************************************************************

A*

AR EMPREC

A

ENUM

5

0

TEXT('EMPLOYEE NUMBER')

A

ENAME

20

 

TEXT('EMPLOYEE NAME')

A

ETYPE

1

 

TEXT('EMPLOYEE TYPE')

A

EDEPT

3

0

TEXT('EMPLOYEE

DEPARTMENT')

A

ENHRS

3

1

TEXT('EMPLOYEE

NORMAL WEEK HOURS')

AK ENUM

Figure 48. DDS for EMPRPT2

Running a Program From a

Menu-Driven

Application

 

 

 

Another

way to

run

an

ILE program

is

from a menu-driven application. The

station

user selects an option from a

menu, which in turn calls a parti

Figure 49 illustrates

an

example of

an

application menu.

 

 

 

 

 

 

 

 

 

‡

 

 

 

 

 

—

 

 

 

 

 

PAYROLL DEPARTMENT MENU

Select one of the following:

1.Inquire into employee master

2.Change employee master

3.Add new employee

 

Selection or command

 

 

 

 

===> _________________________________________________________________________

 

 

 

_______________________________________________________________________________

 

 

 

 

F3=Exit

F4=Prompt F9=Retrieve F12=Cancel

 

 

 

F13=Information Assistant

F16=AS/400 main menu

 

 

ˆ

 

 

 

 

˜

 

 

 

 

 

 

 

 

 

Figure

49.

Example of an Application Menu

 

 

The

menu

shown

in Figure 49 is displayed by a menu program in

which

ea

option

calls a

separate ILE program. You can create the menu

by

using

and

selecting

option

2 ('Design menus').

 

 

Figure 50 on page 107 shows the DDS for the display file of the above DEPARTMENT MENU. The source member is called PAYROL and has a source type of MNUDDS. The file was created using SDA.

106 ILE RPG for AS/400 Programmer's Guide

Page 129 Page 131
Page 130
Image 130
IBM AS/400 Running a Program From a Menu-Driven Application, Selecting Option Design menus, Payroll Department Menu
Page 129 Page 131

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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