Set up logical files

These topics discuss some of the unique considerations for creating logical files.

Many of the rules for setting up logical files apply to all categories of logical files. In these topics, rules that apply only to one category of logical file identify which category they refer to. Rules that apply to all categories of logical files do not identify the specific categories they apply to.

• Create a logical file
  This topic shows how to create a logical file using data description specifications (DDS).
• Describe logical file record formats
  For every logical file record format described with data description specifications (DDS), you must specify a record format name and either the PFILE keyword (for simple and multiple format logical files), or the JFILE keyword (for join logical files).
• Describe access paths for logical files
  Use one of the ways to describe access paths for logical files.
• Set up a join logical file
  These topics provide examples to illustrate how to set up a join logical file. Performance, integrity, and a summary of rules for join logical files are also included.