DDS concepts


Contents

About DDS concepts

  • Who should read the DDS concepts information
  • Conventions and terminology used in the DDS information
  • What's New for V5R3 in the DDS concepts information
  • Describing data attributes using DDS

  • Creating a file using data description specifications (DDS)
  • Completing the DDS form
  • Entering the DDS source statements
  • Creating the DDS file
  • Rules for DDS keywords and parameter values
  • DDS naming conventions
  • DDS syntax coding examples
  • DDS syntax for a physical file
  • DDS syntax for a simple logical file
  • DDS syntax for a join logical file
  • DDS syntax for a display file
  • DDS syntax for a printer file
  • DDS syntax for an ICF file
  • Appendix A. Examples of DDS for Each File Type

  • Examples of database files in DDS
  • Example of a field reference file
  • Example of a physical file with a new record format
  • Example of a logical file specifying multiple formats and new keys
  • Example of a logical file specifying a new record format
  • Example of a join logical file
  • Examples of device files in DDS
  • Example of an inquiry display with two record formats in DDS
  • Example of a subfile with SFLPAG value equal to SFLSIZ value
  • Example of a subfile with paging by OS/400 program and high-level language program
  • Example of a horizontal subfile displayable on two display sizes
  • Example of a message subfile using DDS
  • Example of a printer file using DDS
  • Example of an ICF file using DDS
  • Example program that uses a physical, display, and printer file
  • Example DDS compiler listing
  • DDS debugging template
  • Appendix B. When to specify REF and REFFLD keywords for DDS files

    Appendix C. DDS keyword and value abbreviations

    Appendix D. General considerations for using ideographic text (DBCS) with DDS files

  • Positional entries for files that use DBCS data
  • Length (positions 30 through 34)
  • Data type (position 35)
  • Keyword entries for files that use DBCS (positions 45 through 80)
  • DBCS character strings
  • Entering bracketed-DBCS character strings
  • Entering DBCS-graphic character strings
  • DDS computer printouts with DBCS output
  • Appendix E. Related information

    Appendix F. DDS glossary of terms

    Index


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