| Chapter 7 |
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7
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File Sharing and Buffering
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7.1
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File Accessing
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7.1.1
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Types of File Sharing and Record Streams
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7.1.2
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Interlocked Interprocess File Sharing
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7.1.3
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User-Interlocked Interprocess File Sharing
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7.2
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Record Locking
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7.2.1
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Default Record Locking
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7.2.2
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Record-Locking Options
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7.2.2.1
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Exclusive Locking
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7.2.2.2
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Write Locking
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7.2.2.3
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Read Locking
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7.2.2.4
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No Locking (Query Locking)
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7.2.2.5
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No Query Record Locking Option (Alpha Only)
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7.2.2.6
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Put Service Considerations
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7.2.2.7
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Summary
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7.2.3
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Handling Record-Locking Conflicts
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7.2.3.1
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Handling the Record-Locked Error
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7.2.3.2
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Waiting for Locked Records
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7.2.3.3
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Reading Regardless of Lock
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7.2.4
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Miscellaneous Record-Locking Options
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7.2.4.1
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Manual-Unlocking Option
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7.2.4.2
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Lock-Nonexistent-Record Option
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7.2.5
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Record-Locking Deadlocks
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7.2.5.1
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Record Locking Options to Control Deadlock Detection
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7.3
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Local and Shared Buffering Techniques
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7.3.1
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Record Transfer Modes
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7.3.2
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Understanding Buffering
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7.3.3
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Buffering for Sequential Files
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7.3.4
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Buffering for Relative Files
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7.3.5
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Buffering for Indexed Files
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7.3.6
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Using Global Buffers for Shared Files
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7.3.6.1
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Enhancing Global Buffer Performance
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| Chapter 8 |
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8
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Record Processing
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8.1
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Record Operations
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8.2
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Primary Services
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8.2.1
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Locating and Retrieving Records
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8.2.2
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Inserting Records
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8.2.3
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Updating Records
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8.2.4
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Deleting Records
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8.3
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Secondary Services
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8.4
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Record Access for the Various File Organizations
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8.4.1
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Processing Sequential Files
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8.4.1.1
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Sequential Access
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8.4.1.2
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Random Access
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8.4.2
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Processing Relative Files
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8.4.2.1
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Sequential Access
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8.4.2.2
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Random Access
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8.4.3
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Processing Indexed Files
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8.4.3.1
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Sequential Access
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8.4.3.2
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Random Access
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8.4.4
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Access by Record File Address (RFA)
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8.5
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Block Input/Output
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8.6
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Current Record Context
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8.6.1
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Current-Record Position
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8.6.2
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Next-Record Position
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8.7
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Synchronous and Asynchronous Operations
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8.7.1
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Using Synchronous Operations
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8.7.2
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Using Asynchronous Operations
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| Chapter 9 |
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9
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Run-Time Options
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9.1
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Specifying Run-Time Options
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9.1.1
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Using the Edit/FDL Utility
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9.1.2
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Using Language Statements and RMS
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9.2
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Options Related to Opening and Closing Files
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9.2.1
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File Access and Sharing Options
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9.2.2
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File Specifications
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9.2.3
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File Performance Options
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9.2.3.1
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Extension Size
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9.2.3.2
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Window Size
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9.2.3.3
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Summary of Performance Options
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9.2.4
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Record Access Options
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9.2.5
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Options for Adding Records
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9.2.6
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Options for Data Reliability
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9.2.7
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Options for File Disposition
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9.2.8
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Options for Indexed Files
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9.2.9
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Options for Magnetic Tape Processing
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9.2.10
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Options for Nonstandard File Processing
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9.3
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Summary of Record Operation Options
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9.3.1
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Record Retrieval Options
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9.3.2
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Put Service Options
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9.3.3
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Record Update Options
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9.3.4
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Record Deletion Options
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9.4
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Run-Time Example
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