1.2.3.1.1 "OS/390 V2R9.0 TSO/E User's Guide" via IBM BookManager BookServer

1.2.3.1.1 Data Set Naming Rules

Each data set is identified by a unique data set name. When naming data sets, you must follow certain rules:

A data set name consists of one or more parts connected by periods. Each part is called a qualifier.
Each qualifier must begin with an alphabetic character (A-Z) or the special characters $, #, @.
The remaining characters in each qualifier can be alphabetic characters, digits (0-9), a hyphen (-), or the special characters $, #, @.
Each qualifier must be one to eight characters long.
The maximum length of a complete data set name before specifying a member name is 44 characters, including the periods.

    ___ Example ____________________________________________________________  
   | Some examples of valid data set names are:                             | 
   |                                                                        | 
   |   PARTS                                                                | 
   |                                                                        | 
   |   $PARTS.DATA2                                                         | 
   |                                                                        | 
   |   A.VERY.LONG.DATASET.NAME.INDEED                                      | 
   |                                                                        | 
   |________________________________________________________________________|

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1.2.3.1.1 Data Set Naming Rules

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