COBOL Manual for TNS and TNS/R Programs

HP COBOL Manual for TNS and TNS/R Programs—522555-006
28-1
28 Disk Input and Output
Both batch programs and transaction-supporting servers use disk files.
Topics:
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Common Disk File Topics
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Types of HP Disk Files
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Creating and Using HP COBOL Sequential Files
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Creating and Using HP COBOL Relative Files
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Creating and Using HP COBOL Indexed Files
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Creating and Using Queue Files
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Establishing Starting Points in Files
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Optimizing Disk File Processing
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Optimizing Disk File Storage
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Avoiding Deadlock
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Using Enscribe and Operating System Routines
Common Disk File Topics
These topics apply to all disk files:
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Allocation
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Partitioned Files
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Purging Files or Their Data
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Locking
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Ownership and Security
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Fixed-Length and Variable-Length Records
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Exclusion Modes
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Time Limits
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Reading Files From Called Programs
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Sharing Files Among HP COBOL Programs
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Sharing Files Among Different-Language Modules
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Modification
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Maximum Number of Files