Data definition specifications

Data definition specifications (abbr .: DDS , English Data Definition Specifications ) is on the IBM System / 38 and AS / 400 used type of data description for program-described files .

Functions

By using the data definition specifications, file attributes can be described externally, not in the application program itself, but in program-independent file descriptions.

Files for DDS use can be:

• Physical files
• Logical files
• Screen files
• Printer files
• Remote data processing files and BSC files

See also

• System i
• System / 38
• Control Program Facility (CPF)

literature

• IBM System / 38 System Control Program (CPF) Data Definition Specification (DDS) manual - IBM Form SC12-3527
• DDS reference V5R2 for IBM i for Business