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

1.2.3.1.2 Data Set Naming Conventions

In addition to the rules, you can make use of certain naming conventions that will make TSO/E easier for you to use. These conventions are an offshoot of the rules. Thus a data set name that follows the naming rules might not follow the naming conventions. The conventions are:

Data set names consist of three qualifiers.
The first qualifier of each data set name is your prefix as specified in your user profile. Sometimes your prefix is your user ID.
The second qualifier of each data set name is your choice; it should be a meaningful name to you.

The third qualifier is a descriptive qualifier implying certain characteristics of the data. See the following table.

    ________________________________________________________________________  
   | Figure 2. Descriptive Qualifiers                                       | 
   |________________________________________________________________________| 
   | Descriptiv|                                                            | 
   | Qualifier | Data Set Contents                                          | 
   |___________|____________________________________________________________| 
   | ASM       | Assembler (F) input                                        | 
   |___________|____________________________________________________________| 
   | CLIST     | TSO/E commands and CLIST statements                        | 
   |___________|____________________________________________________________| 
   | CNTL      | JCL and SYSIN for SUBMIT command                           | 
   |___________|____________________________________________________________| 
   | COBOL     | American National Standard COBOL statements                | 
   |___________|____________________________________________________________| 
   | DATA      | Uppercase text                                             | 
   |___________|____________________________________________________________| 
   | EXEC      | TSO/E commands and REXX instructions                       | 
   |___________|____________________________________________________________| 
   | FORT      | FORTRAN (E, G, GI, H, and GOFORT) statements               | 
   |___________|____________________________________________________________| 
   | LINKLIST  | Output listing from linkage editor                         | 
   |___________|____________________________________________________________| 
   | LIST      | Listings                                                   | 
   |___________|____________________________________________________________| 
   | LOAD      | Load module                                                | 
   |___________|____________________________________________________________| 
   | LOADLIST  | Output listing from loader                                 | 
   |___________|____________________________________________________________| 
   | OBJ       | Object module                                              | 
   |___________|____________________________________________________________| 
   | OUTLIST   | Output listing from OUTPUT command                         | 
   |___________|____________________________________________________________| 
   | PASCAL    | PASCAL statements                                          | 
   |___________|____________________________________________________________| 
   | PLI       | PL/I(F), PL/I Checkout, or PL/I Optimizing compiler        | 
   |           | statements                                                 | 
   |___________|____________________________________________________________| 
   | TESTLIST  | Output listing from TEST command                           | 
   |___________|____________________________________________________________| 
   | TEXT      | Uppercase and lowercase text                               | 
   |___________|____________________________________________________________| 
   | VSBASIC   | VSBASIC statements                                         | 
   |___________|____________________________________________________________|

A data set name that consists of a prefix, a user-supplied name, and a descriptive qualifier is a "fully-qualified" data set name. A fully-qualified data set name looks like:

When you refer to partitioned data sets, enclose the member name in parentheses immediately following the descriptive qualifier. A fully-qualified partitioned data set name looks like:

You do not have to use the conventional descriptive qualifiers when naming a TSO/E data set. However, when a data set name adheres to the conventions, you can refer to the data set by an abbreviated version of the name, and the system supplies the rest of the name.

    ___ Example ____________________________________________________________  
   | When you allocate data set PREFIX.OLD.DATA with your prefix, you need  | 
   | only specify the second and third qualifiers because the system        | 
   | assumes your prefix as the first qualifier.                            | 
   |                                                                        | 
   |   ALLOCATE DATASET(old.data) ...                                       | 
   |                                                                        | 
   |________________________________________________________________________|

You must enclose the data set name in single quotation marks if you specify a fully-qualified data set name with a prefix (leftmost qualifier) that is not your own.

    ___ Example ____________________________________________________________  
   | When specifying data set PROG.LIST that belongs to a user whose prefix | 
   | is USER505, type:                                                      | 
   |                                                                        | 
   |   'user505.prog.list'                                                  | 
   |                                                                        | 
   |________________________________________________________________________|

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1.2.3.1.2 Data Set Naming Conventions

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