Specifying compression options for system entries

To specify the compression technique for the system registration entry, complete the following steps:

  1. The Compression Options panel shown in Figure 1 is displayed when you indicate the following information on the DPICDS Administration panel (see Specifying-selection-criteria-and-process): an asterisk (*) for IMSID, segment, and database to select a global system registration entry; Y to select compression options.The panel is displayed for Add and Change; the function you are performing is indicated in the panel title.

    Figure 1. DPICDS Entry ADD - Compression Options panel (system entries)

                         DPICDS Entry ADD - Compression Options                     
                                                                                   
     DPICDS Entry                                                  More:     +      
       IMSID . . . . . . : ****                                    DOWN to continue
       Database  . . . . : ********                                                 
       Segment . . . . . : ********                                                 
                                                                                   
     DPICDS Information                                                             
       Record type . . . : System Registration       Level : Run           
                                                                          
       Request Use of Incore Index:        (Y or N)                        
                                                                          
     Type compression information.  Then press Enter.                               
                                                                                   
       Technique . . . . . 3 1. SH - Static Huffman                                 
                             2. BC - Basic Character                                
                             3. EC - Extended Character                             
                             4. HW - Hardware                                       
                             5. HY - Hybrid
                                                                                   
                                                                                    
     Commands:  CANCEL   SAVE                                                       
                                                                                                                                                                   
     Command ===> _________________________________________________________________
  2. You must specify Y to build the in-core index at initialization. This means that you will run the Registration Entry and Index Build utilities to improve the initialization process for DATA PACKER/IMS. Specify N if you do not plan to build the in-core index. For more information, see DPICDS-Registration-Entry-and-Index-Build-utility1.
  3. You must specify a compression technique. Type the number which corresponds to the technique you want to select:
    • 1 (SH - Static Huffman)
    • 2 (BC - Basic Character)
    • 3 (EC - Extended Character)
    • 4 (HW - Hardware)
    • 5 (Hybrid)
  4. If you specified Y for output options, press the SCROLL DOWN function key (usually F8). Pressing this key validates the data entered and displays the next panel for specifying message options (see Specifying-message-options).If you do not want to display the next panel or if you specified N for output options, then type the SAVE command and press Enter to record the data for this entry. You are returned to the DPICDS Administration panel (see Specifying-selection-criteria-and-process).

 

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