Work with database files

This topic describes the various tasks that can be used to ensure that files are used effectively.

• What resources the server has allocated for each file type.
• How to move data between different files such as device and database.
• The options that exist when an application is used for accessing a file.
• The levels of support that exist for shared files.
• The process of changing file attributes such as file name, device name or remote location name.

• Allocate file resources
  Resources are those parts of the server that are required by a job or task, including main storage, devices, the processing unit, programs, files, libraries, and folders. When you write a high-level language program, you should be aware of what resources the server has allocated for each file type.
• Copy files
  The copy function on iSeries™ can copy physical and logical files, copy members and records, copy complex objects, and copy files between servers.
• Open files
  When you want an application to use a file, you do so by referring to that file by name. The file description for that file will then control how the program and the server will interact.
• Share files
  File management on iSeries™ provides several levels of support for shared files. Files can be shared among many users, many jobs, or many programs within the same job.
• Use overrides
  You can use overrides to temporarily change a file name, a device name associated with the file, or some of the other attributes of a file.