|   Developing an Interactive RPG Program
This course is also available on CD-ROM
Presenter: Manta TechnologiesAvailability: Online
SKU: 3580 | |
Course Description:
This course describes how to create an interactive application. The course begins by describing the role a display file plays in an interactive application and how a display file is created. You will see the data description specifications (DDS) source statements most commonly used for a display file. The course then considers the requirements for an interactive RPG program. You will see how to code the F-spec for a display file and how to display data at, and receive data from, a workstation.
The remainder of the course is devoted to the topic of subfiles. After being introduced to the concepts related to subfiles, you will see the DDS statements used to define a load-all subfile. You will then see how to code an RPG program to load and display a subfile. The course next uses DDS and RPG program examples to illustrate the differences between load-all, expanding, and single-page subfiles. You will also see how to code an RPG program that reads and updates the records in a subfile.
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After completing this course, you should be able to:
• Interpret the DDS statements used to define a display file
• Use the CRTDSPF command to create a display file from DDS source
• Code the F-spec for a display file
• Use the EXFMT, READ, and WRITE op codes
• Use indicators to determine if a special-purpose key was pressed
• Interpret the DDS statements used to define a subfile
• Code the RPG statements to define, load, and display a subfile
• Describe the differences between a load-all , expanding, and a single-page subfile
• Describe the differences between the DDS for different types of subfiles
• Code the RPG statements to read subfile records
• Code the RPG statement to update a subfile record
Audience: This course is intended for AS/400 and iSeries programmers new to the RPG programming language. It can also be taken by RPG III programmers who want to learn RPG IV.
Prerequisites: This course assumes that you are familiar with computer programming concepts. In order to satisfy this prerequisite, you should have some programming experience with another programming language. This course also assumes that you have a working knowledge of basic OS/400 concepts and facilities. You can satisfy this prerequisite by successfully completing the courses in the following series:
· Using an iSeries System
Finally, the course assumes that you have an understanding of the basics of RPG programming. You can satisfy this prerequisite by successfully completing the previous courses of this series:
· RPG Fundamentals
· RPG File Processing
· Rounding Out the Essentials of RPG
· Compiling and Executing an ILE RPG Program
Course Outline:
Creating a Display File
Coding an Interactive Program
Introduction to Subfiles
Using Expanding and Single-Page Subfiles
Reading and Updating Subfile Records
Course Details: | Length: | 2 hours | | Format: | Online Learning | | Publisher: | Manta |
Developing an Interactive RPG Program
This course is also available on CD-ROM
Presenter: Manta TechnologiesAvailability: Online
SKU: 3580 | |
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