IBM AS400 Developer Training

IBM AS400 Developer Training is a practical development program designed for learners who want to build programming and application-support skills for IBM i environments, commonly known by the older AS/400 name. The course covers core areas such as RPG, RPGLE, CL programming, Db2 for i, SQL, DDS, job handling, debugging, file management, and application development concepts used in IBM i systems.

The training is suitable for students, freshers, working professionals, application support engineers, developers, and career switchers who want to understand how enterprise applications are developed, maintained, tested, and supported on IBM i.

Through IBM AS400 Developer Training Online, learners work through programming concepts, database operations, business logic, batch processing, debugging, and common development scenarios. The goal is to help learners develop the technical foundation required for IBM i developer, RPG developer, application support, and modernization-related roles.

IBM AS400 Developer Training Course Overview

IBM AS/400 has been used for decades in enterprise environments where stability, transaction processing, security, and business application reliability are important. The platform has evolved significantly and is now part of the IBM i ecosystem running on IBM Power systems.

Although the AS400 name is still widely used in job searches and training queries, modern developers usually work with technologies such as:

• IBM i
• RPG IV
• RPGLE
• ILE RPG
• Control Language (CL)
• Db2 for i
• Embedded SQL
• DDS
• Physical Files and Logical Files
• Display Files
• Printer Files
• Subfiles
• Job management
• Batch processing
• IBM i commands
• Application debugging

The IBM AS400 Developer Training at Ascents Learning focuses on these practical development areas rather than treating AS400 as only a legacy system.

Learners start by understanding the IBM i environment, libraries, objects, jobs, files, and basic commands. They then move into application programming, database access, program flow, file handling, modular development, debugging, and common enterprise development scenarios.

The course is designed to answer an important practical question: what does an IBM i developer actually do during a normal development or support assignment?

For example, an IBM AS400 developer may need to:

• Read customer data from a Db2 table
• Validate business conditions
• Update transaction records
• Create an RPGLE program
• Call another program or procedure
• Process a batch job
• Debug an incorrect calculation
• Analyze an existing RPG application
• Modify a display file
• Work with subfiles
• Handle errors and job logs
• Write SQL queries for data analysis
• Support production applications

These are the types of development activities covered throughout the IBM AS400 Developer Course Online.

What Is IBM AS400 Development?

AS/400 was originally introduced as an integrated business computing platform. Over time, the technology developed into what is now known as IBM i.

IBM i is used to run business-critical applications in industries such as:

• Banking
• Financial services
• Insurance
• Manufacturing
• Retail
• Logistics
• Distribution
• Healthcare
• Supply chain management
• Enterprise resource planning

Many organizations continue to operate important systems built with RPG, RPGLE, CL, Db2, and IBM i technologies.

IBM AS400 development therefore includes more than writing RPG code. Developers often need to understand how applications, databases, jobs, system objects, libraries, files, user interfaces, batch processes, and business workflows interact.

A structured IBM AS400 Developer Training Online program helps learners understand these relationships instead of learning individual commands without context.

Who Should Enroll in IBM AS400 Developer Training?

The IBM AS400 Developer Training is designed for learners from different technical and professional backgrounds.

Students

Students from computer science, information technology, engineering, computer applications, and related backgrounds can use the course to understand enterprise application development on IBM i.

Basic programming knowledge is useful, but previous AS400 experience is not mandatory for beginners.

Freshers

Fresh graduates who want to explore enterprise application development can use the IBM AS400 Developer Course Online to build foundational knowledge of IBM i, RPG programming, databases, SQL, and application support.

Working Professionals

Software developers, production support professionals, database professionals, and application engineers working around IBM systems can use the course to strengthen their development knowledge.

Career Switchers

Professionals working with Java, .NET, mainframe systems, ERP platforms, databases, testing, or technical support may take IBM AS400 Developer Training Online when moving toward IBM i development or application support roles.

Application Support Professionals

Support engineers who regularly encounter RPG applications, IBM i jobs, spool files, database records, and production issues can benefit from understanding the development layer behind those applications.

Existing AS400 Professionals

Professionals familiar with older RPG or AS400 environments can use the course to refresh their understanding of RPGLE, SQL-based development, modular programming, debugging, and modern IBM i development practices.

Learning Outcomes

After completing the IBM AS400 Developer Training, learners should have a structured understanding of IBM i application development and the major technologies used in an AS400 development environment.

The exact level of proficiency depends on previous experience, practice time, and project exposure.

Understand the IBM i Environment

• IBM i architecture
• Libraries
• Objects
• Jobs
• Job queues
• Output queues
• User profiles
• Commands
• Source files
• Program objects
• Database objects

Work with IBM i Commands

Learners practice activities such as:

• Creating libraries
• Managing source members
• Working with objects
• Viewing jobs
• Checking spool files
• Compiling programs
• Working with database files
• Running programs
• Reviewing job logs

Develop RPG Programs

• RPG program structure
• Variables
• Data types
• Expressions
• Conditional logic
• Loops
• Arrays
• Indicators
• Built-in functions
• Data structures
• File operations
• Procedures
• Parameter passing
• Error handling

Understand RPGLE and ILE Concepts

• RPGLE program structure
• Free-format RPG
• Procedures
• Prototypes
• Service programs
• Modules
• Binding directories
• Subprocedures
• Reusable business logic

Write CL Programs

• Program calls
• Variables
• Parameters
• Conditional processing
• Job execution
• File handling
• Message handling
• Batch processing
• Command execution

Work with Db2 for i

• Database tables
• Physical files
• Logical files
• Keys
• Record formats
• Data access
• Record updates
• Database relationships
• Constraints
• Query operations

Use SQL in IBM i Development

• SELECT
• INSERT
• UPDATE
• DELETE
• JOIN
• GROUP BY
• Subqueries
• Aggregate functions
• Filtering
• Sorting
• Embedded SQL
• Database access from RPG programs

Understand DDS

• Physical files
• Logical files
• Display files
• Printer files
• Record formats
• Field definitions
• Keys

Build Display Files and Subfiles

• Display file design
• Screen fields
• Record formats
• Function keys
• Input validation
• Subfile loading
• Subfile control records
• User interaction
• Program-to-screen communication

Debug IBM i Programs

• Incorrect business logic
• Data problems
• Program failures
• File errors
• Parameter mismatches
• Unexpected calculations
• Job failures

Teaching Methodology

The IBM AS400 Developer Training at Ascents Learning follows a practical teaching model that combines conceptual explanation with development exercises.

Instructor-Led Sessions

Topics are explained through live sessions where learners can understand not only syntax but also why a particular development approach is used.

Hands-On Programming

• Creating RPG programs
• Working with files
• Writing SQL queries
• Building CL programs
• Passing parameters
• Creating display files
• Debugging programs
• Handling business rules

Scenario-Based Learning

The IBM AS400 Developer Course Online uses business-oriented examples rather than only isolated programming statements.

A typical exercise may involve reading an order record, checking customer information, calculating a value, updating a database table, and generating an output record.

Assignments

• RPG coding exercises
• SQL queries
• Database operations
• CL programs
• File handling
• Debugging exercises

Doubt-Clearing Support

Ascents Learning provides doubt-clearing opportunities so learners can discuss coding errors, development concepts, database operations, and troubleshooting questions.

Project-Oriented Practice

Where included in the training plan, learners work on practical development scenarios that bring together RPGLE, Db2, SQL, CL, and IBM i concepts.

Tools & Technologies Covered

• IBM i: Operating environment for business applications running on IBM Power systems.
• RPG: Programming language used for business applications on IBM systems.
• RPG IV and RPGLE: Modern forms of RPG used for structured IBM i development.
• ILE: Supports modules, procedures, service programs, and reusable components.
• CL Programming: Used for commands, system processing, and job control.
• Db2 for i: Integrated relational database used by IBM i applications.
• SQL: Used for querying, updating, analyzing, and managing relational data.
• DDS: Used in many existing IBM i applications for defining files.
• Display Files: Used for interactive screen-based applications.
• Subfiles: Used to display and process lists of records.
• IBM i Commands: Used for compiling, running, monitoring, and troubleshooting applications.
• Debugging Tools: Used to identify programming, runtime, and data issues.

Practical Skills Covered in IBM AS400 Developer Training

• Reading existing RPG code
• Writing RPGLE programs
• Understanding free-format RPG
• Creating CL programs
• Working with Db2 data
• Writing SQL queries
• Handling files
• Calling programs
• Passing parameters
• Creating interactive screens
• Working with subfiles
• Compiling programs
• Testing application logic
• Debugging application problems
• Reading job logs
• Understanding batch processing
• Supporting existing applications

Certification & Industry Recognition

Learners who meet the applicable course completion requirements can receive an Ascents Learning course completion certificate for IBM AS400 Developer Training.

A training certificate can help document structured learning, but employers usually evaluate IBM i professionals based on practical knowledge and technical capability.

Important skill areas include:

• RPG and RPGLE knowledge
• Db2 and SQL skills
• IBM i understanding
• Debugging ability
• Application support experience
• Practical programming ability
• Project exposure
• Business domain knowledge

For this reason, IBM AS400 Developer Training Online focuses on practical exercises and development skills rather than certificate preparation alone.

Career Opportunities After IBM AS400 Developer Training

Completing an IBM AS400 Developer Training program can support preparation for several IBM i-related roles. Actual job eligibility depends on experience, technical proficiency, employer requirements, and domain knowledge.

IBM i Developer

IBM i developers build, maintain, test, and support applications running on IBM i environments.

AS400 Developer

Many employers continue to use the AS400 developer title for roles involving RPG, RPGLE, CL, Db2, and IBM i.

RPG Developer

RPG developers work with RPG IV, RPGLE, application logic, files, procedures, and database operations.

IBM i Application Developer

This role may involve enterprise application development, maintenance, database integration, and application support.

AS400 Application Support Analyst

Support analysts investigate application failures, data issues, job problems, user incidents, and production errors.

IBM i Production Support Engineer

Production support professionals monitor applications, jobs, queues, logs, and business processes running on IBM i.

RPGLE Developer

RPGLE developers commonly work with free-format RPG, SQL, procedures, service programs, and existing IBM i applications.

IBM i Modernization Developer

Modernization work may involve updating older RPG applications, increasing SQL usage, restructuring applications, and integrating IBM i systems with newer platforms.

IBM AS400 Developer Training for Freshers

Freshers can begin with IBM i fundamentals and gradually move toward application development.

1. IBM i fundamentals
2. Libraries and objects
3. IBM i commands
4. Database files
5. RPG programming
6. RPGLE
7. CL
8. SQL
9. Display files
10. Debugging

The IBM AS400 Developer Training Online follows this progression so learners can build concepts in a logical order.

IBM AS400 Developer Training for Working Professionals

Working professionals often join the course to understand IBM i development at a deeper level or prepare for a new project.

The IBM AS400 Developer Course Online can help professionals from Java, databases, testing, ERP systems, mainframe systems, or application support connect their existing knowledge with IBM i technologies.

Why IBM AS400 Skills Are Still Relevant

The term AS400 is old, but many applications associated with the platform continue to support important enterprise processes.

• Financial transactions
• Inventory processing
• Order management
• Manufacturing
• Insurance administration
• Distribution
• Supply chain operations
• Banking processes
• Customer records
• Back-office workflows

Current IBM i work may involve maintaining traditional RPG applications while also using RPGLE, free-format syntax, SQL, modular programming, APIs, and integration methods.

Why Choose Ascents Learning for IBM AS400 Developer Training?

Ascents Learning structures the IBM AS400 Developer Training Online around practical understanding rather than isolated theory.

Experienced Training Approach

Training focuses on development scenarios, enterprise workflows, and the practical relationship between RPG, CL, Db2, SQL, files, jobs, and IBM i.

Practical Exercises

Learners work on programming and database exercises so they can apply concepts instead of only reading syntax.

Live Development Scenarios

Examples can include reading business records, validating information, calling programs, updating data, processing jobs, and debugging errors.

Small-Batch Learning Support

Smaller batches make technical discussions, coding questions, and doubt clearing easier.

One-to-One Doubt Support

Learners can clarify questions related to programming logic, RPGLE syntax, database queries, compilation errors, and application behavior.

Flexible Learning Options

The IBM AS400 Developer Course Online is suitable for learners who need remote training alongside college, work, or other commitments.

Interview Preparation

• RPG
• RPGLE
• CL
• Db2
• SQL
• DDS
• Subfiles
• IBM i commands
• Debugging
• Application development scenarios

Resume and Career Guidance

Learners can receive guidance on presenting IBM i development skills, programming knowledge, projects, and technical exposure clearly.

Skills You Can Add After IBM AS400 Developer Training

• IBM i
• AS400
• RPG
• RPG IV
• RPGLE
• ILE RPG
• Free-Format RPG
• CL
• CLLE
• Db2 for i
• SQL
• Embedded SQL
• DDS
• Physical Files
• Logical Files
• Display Files
• Printer Files
• Subfiles
• IBM i Commands
• Job Management
• Batch Processing
• Program Debugging
• Application Support
• Enterprise Application Development

Start Your IBM AS400 Developer Training with Ascents Learning

IBM i development requires more than memorizing RPG syntax. A developer needs to understand how programs, databases, files, jobs, commands, screens, business rules, and system processes work together.

The IBM AS400 Developer Training from Ascents Learning is structured to build that understanding through instructor-led learning, programming practice, database exercises, debugging, and practical development scenarios.

Whether you are a student beginning your technical career, a fresher exploring enterprise development, a working professional supporting IBM i applications, or a developer planning a career transition, IBM AS400 Developer Training Online can provide a structured path for building the required foundation.

Contact Ascents Learning to learn more about the IBM AS400 Developer Course Online, upcoming batches, training format, curriculum, and enrollment process.