4 to 5 hours
Application programmers who maintain and develop commercial and scientific PL/1 programs
Knowledge of programming concepts and experience with mainframe system architecture
After completing this course, the student will be able to:
• Identify how to access files
• Recognize file processing methods
• Identify condition and error handling
Record-Orientated File Processing Concepts
Consecutive File Characteristics
File Declarations for a Consecutive File
Read, Write and Update Operations
Input and Output Area Definition
End-of-File Processing
Direct Vs Random Record Location
Keys and Random Access
VSAM Data Set Types Characteristics and Declaration:
Indexed Data Sets
Using Keys
Skip Sequential Processing
Conditions Set by Key Processing
Move File Processing
Locate File Processing
Stream-Orientated File Processing
Characteristics of Stream I/O
GET and PUT Statements
File Attributes and I/O Statements
How to Select Different Data Set Types for Your Programs
ON Statement Definition
Built-In Conditions and User Defined Conditions
On Conditions Affecting Program Flow and Control
Scope of ON Conditions
Commonly Encountered PL/1 Conditions:
Generic Error Conditions
File Related Conditions
Arithmetic Related Conditions
Storage Related Conditions
