Mode:
Duration:
1
Coding works best on desktop or with an external keyboard.
Natural Exit Condition in Loop - Natural-scripting Typing CST Test
Natural Exit Condition in Loop — Natural-scripting Code
Loop until user enters 0.
DEFINE DATA LOCAL
1 NUM (N)
END-DEFINE
DO
INPUT 'Enter number (0 to quit): ' NUM
IF NUM = 0
EXIT
ENDIF
WRITE 'You entered: ' NUM
END-DO
ENDNatural-scripting Language Guide
Natural Scripting refers to the use of the Natural programming language (from Software AG) to create applications, automate business logic, and interact with databases, especially within mainframe and enterprise environments.
Primary Use Cases
- ▸Automating enterprise business processes
- ▸Building database-centric applications on mainframes
- ▸Creating batch jobs for reporting and transaction processing
- ▸Rapid prototyping of business logic applications
- ▸Integrating with legacy systems and middleware
Notable Features
- ▸English-like syntax for easier readability
- ▸Seamless integration with Adabas databases
- ▸Supports batch, online, and event-driven applications
- ▸High-level procedural abstractions for rapid development
- ▸Modularization via subprograms and functions
Origin & Creator
Developed by Software AG in the 1970s as a high-level language to simplify application development on mainframe and later client-server systems.
Industrial Note
Commonly used in banking, insurance, and logistics industries for large-scale transaction processing, often interfacing with Adabas or other enterprise databases.
Quick Explain
- ▸Natural is a 4GL (Fourth Generation Language) designed for rapid application development.
- ▸It provides procedural constructs and some modularization capabilities.
- ▸Widely used for database-driven business applications on mainframes and server environments.
- ▸Supports event-driven and batch processing tasks.
- ▸Ideal for enterprises needing maintainable, database-integrated solutions.
Core Features
- ▸Strong support for database access and record handling
- ▸Procedural programming constructs (IF, PERFORM, LOOP)
- ▸Error handling and transaction management
- ▸Callable subprograms for reusable logic
- ▸Integration with batch and online environments
Learning Path
- ▸Learn Natural syntax and program structure
- ▸Understand database integration with Adabas
- ▸Practice writing modular subprograms
- ▸Explore batch and online processing
- ▸Master enterprise integration patterns and workflow automation
Practical Examples
- ▸Generating daily banking transaction reports
- ▸Validating insurance claims in batch
- ▸Updating master customer records in Adabas
- ▸Automating payroll calculations and data transfers
- ▸Integrating with legacy ERP systems for inventory updates
Comparisons
- ▸Natural vs COBOL: Natural is higher-level and faster to develop
- ▸Natural vs Java: Natural is database-centric, Java is general-purpose
- ▸Natural vs RPG: Natural is procedural 4GL, RPG often tied to IBM i systems
- ▸Batch vs Online Natural programs: batch for reports, online for real-time interaction
- ▸Natural vs modern scripting: Natural excels in legacy enterprise environments
Strengths
- ▸Rapid development for business applications
- ▸Readable and maintainable syntax
- ▸Efficient database operations for large datasets
- ▸Mature, stable language with decades of use
- ▸Compatible with legacy mainframe and server systems
Limitations
- ▸Proprietary, mainly tied to Software AG ecosystem
- ▸Limited modern IDE and tooling support compared to contemporary languages
- ▸Steep learning curve for newcomers unfamiliar with 4GLs
- ▸Less community support than mainstream languages
- ▸Primarily suited for database-centric applications, not general-purpose programming
When NOT to Use
- ▸New web applications or microservices
- ▸High-performance computing tasks
- ▸Non-database-centric scripting
- ▸Applications requiring modern GUI frameworks
- ▸Rapid prototyping outside mainframe or Natural ecosystem
Cheat Sheet
- ▸READ/WRITE -> database operations
- ▸IF/ELSE -> conditional logic
- ▸PERFORM -> call subprogram
- ▸DEFINE DATA -> declare variables
- ▸ON ERROR -> error handling
FAQ
- ▸Is Natural still used today? -> Yes, in enterprise and mainframe environments.
- ▸Can Natural integrate with modern systems? -> Yes, via EntireX or APIs.
- ▸Is Natural object-oriented? -> Mostly procedural, some modularization.
- ▸Can I run Natural outside mainframes? -> Yes, server-based environments supported.
- ▸Is learning Natural useful today? -> Valuable for maintaining legacy enterprise applications.
30-Day Skill Plan
- ▸Week 1: Basic syntax, variables, and control flow
- ▸Week 2: Database reads, writes, and simple reports
- ▸Week 3: Subprograms and modular coding
- ▸Week 4: Batch processing and transaction management
- ▸Week 5: Integration, optimization, and best practices
Final Summary
- ▸Natural Scripting is a 4GL language for database-driven enterprise applications.
- ▸Supports batch, online, and event-driven processing.
- ▸Highly readable and modular for rapid business logic development.
- ▸Integrated with Adabas and other enterprise databases.
- ▸Still relevant for legacy system maintenance and enterprise automation.
Project Structure
- ▸Source Natural programs (.NAT or .PRG files)
- ▸Subprograms and modules for reusable logic
- ▸Database definitions and views
- ▸Job control or scheduling scripts for batch processing
- ▸Documentation of logic and data flow
Monetization
- ▸Legacy Natural application support
- ▸Enterprise system integration consulting
- ▸Workflow automation for mainframe systems
- ▸Reporting and analytics development
- ▸Modernization and migration services
Productivity Tips
- ▸Use subprograms for reusable logic
- ▸Keep database operations efficient
- ▸Document business rules clearly
- ▸Test incrementally in batch or online environment
- ▸Optimize loops and conditional processing
Basic Concepts
- ▸Natural Objects: variables, arrays, and structures
- ▸Subprograms and functions for modularity
- ▸Database access via direct read/write or view definitions
- ▸Control flow: IF, PERFORM, LOOP, GOTO
- ▸Error handling via ON ERROR or transaction rollback