cdc_6500_survival_guide
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| cdc_6500_survival_guide [2021/03/15 23:28] – [File System] hc9 | cdc_6500_survival_guide [2021/03/15 23:29] – [File System] hc9 | ||
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| * Permanent files are preserved by the system from their creation until their deletion by user command. Each permanent file is owned by a single user and is normally accessible only by its owner, though it is possible to make files accessible by other users as well. | * Permanent files are preserved by the system from their creation until their deletion by user command. Each permanent file is owned by a single user and is normally accessible only by its owner, though it is possible to make files accessible by other users as well. | ||
| * Two types of files are supported: | * Two types of files are supported: | ||
| - | |||
| * **Direct access** | * **Direct access** | ||
| * Used for random access and database applications. | * Used for random access and database applications. | ||
| - | |||
| * **Indirect access** | * **Indirect access** | ||
| * Common sequential access files, including program source files. | * Common sequential access files, including program source files. | ||
cdc_6500_survival_guide.txt · Last modified: 2022/12/05 06:33 by hc9