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# Network

In the predefined Predict metastructure, a network can have passive and active associations of the following types:

Valid passive associations: | no predefined association
Valid active associations: | "Uses VM" "Contains NO"

The location of a database must be specified by linking each database to an object of type Virtual Machine and each virtual machine to an object of type Network. A current network can be defined in the Miscellaneous section of the General defaults of Predict or with the command `SET VM virtual-machine-ID`.

The current network will be taken as default for virtual machine objects if no network is specified.

Links between virtual machines and networks are established by entering the network in the parameter "Belongs to NW" of the virtual machine. A virtual machine cannot be linked via "Belongs to NW" to a network using the link editor.

See Defining the Distribution of Data in Predict in the section Adabas Vista in the Predict and Other Systems documentation for a description of how to define the distribution of data.

This document covers the following topics:

- Network Maintenance Menu

- Add a Network Screen

- Network-Specific Maintenance

- Network Retrieval

## Network Maintenance Menu

The Network Maintenance menu is called with function code M and object code NW in a Predict main menu, or with the command `MAINTAIN NETWORK`.

    13:13:21            *****  P R E D I C T  *****              2007-05-31
     Plan   3              - (NW) Network Maintenance -             Profile SYSTEM

      Function                              Function

      A  Add a Network                      D  Display Network
      C  Copy Network                       L  Link children
      M  Modify Network                     S  Select Network from list
      N  Rename Network
      P  Purge Network

    Function ..............

    Network ID ............                                  Attributes ....*
    Copy ID ...............

    Restrictions .........*   Profile Default,empty          Association ...*

    Command ===>

    Enter-PF1---PF2---PF3---PF4---PF5---PF6---PF7---PF8---PF9---PF10--PF11--PF12---
          Help  Next  Stop  Last  LnkEl Flip  Print Impl  AdmFi SelFi Prof  Main

The parameters are described under Global Attributes.

All functions are described in the section Maintenance in the Predict Reference documentation. The function Purge Network is described in the section Purge Network - Code P.

## Add a Network Screen

The following screen is displayed for the Add a Network function. The Copy and Modify screens are similar.

    13:06:57             *****  P R E D I C T  *****            2007-05-31
                                 - Add a Network -
    Network ......... HNO-NW

    Keys ..
    Zoom: N

    Abstract    Zoom: N

The parameters are described under Global Attributes.

## Network-Specific Maintenance

Standard maintenance functions are used for maintaining networks. These are described in the section Maintenance in the Predict Reference documentation.

The special rules applying to function Purge Network are described below.

### Purge Network - Code P

The following rules apply:

- A network that is linked to a virtual machine via "Uses VM" cannot be deleted.

- The network defined as current network in the General defaults cannot be deleted.

## Network Retrieval

Standard retrieval functions are described in the section Retrieval in the Predict Reference documentation. The network-specific function Vista Numbers is described below.

### Vista Numbers - Code N

Displays information on the use of Vista numbers in list form (see sample output below).

    13:13:21            *****  P R E D I C T  *****             2007-05-31
    Plan   0                - (NW) Network Retrieval -             Profile SYSTEM

     Retrieval Type                           Retrieval Type

     D  Network                               B  Network with parents
     E  Execu +------------------- Search criteria ----------------------+
     C  Dummy !                                                          !
     N  Vista ! Start value                                              !
              !   Vista DBnr ..... 0     Fnr ..... 0                     !
              !                                                          !
    Retrieval ! End value                                                !
    Output-mo !   Vista DBnr ..... 65535 Fnr ..... 32767                 !
              !                                                          !
    Network I +----------------------------------------------------------+

    Restrictions .........*   Profile Default,empty           Model..........*
    Output options .......*   Profile Default                 Association....*

    Command ===>
    Enter-PF1---PF2---PF3---PF4---PF5---PF6---PF7---PF8---PF9---PF10--PF11--PF12---
          Help  Next  Stop  Last  LnkEl Flip  Print Impl  AdmFi SelFi Prof  Main

Parameters
Network ID | Restricts the report to Vista numbers used in the given network.
Start value / End value | Restricts the report to Vista numbers in the given range.
Vista number |
A window appears for specifying Start value and End value. Valid values:
0 - 65535 | for Vista DBnr.
0 - 32767 | for Vista Fnr.

### Sample Output

     09:53:36             *****  P R E D I C T  *****             2007-05-31
                               - List Vista Numbers -

    Network ID ......... HOME
    -------------------------------------------------------------------------------
                                                           Vista
    Cnt  Object ID                        Object type   DBnr      Fnr  Environment

        1 HEB-DA-MIG                       Database        2        0
          Type ... Adabas ,Isolated                     .... Thru ...
          reserved Vista numbers                           2    65535
        2 BOE-FI03                         FI Vista el.    4        2
        3 HEB-EDT                          FI Vista el.    4        3
        4 BOE-FI07                         FI Vista el.    4        4
        5 BOE-FI-E-02                      FI Vista el.    4        5

Meaning of Columns
Object ID |
ID of the object referencing the Vista number. The following information on the object may be displayed.
Type ... | For databases: the Vista parameter of the database (Isolated, Local, Vista).
reserved Vista numbers | For databases: a range of Vista numbers is reserved depending on the DBnr. Reserved range: 0 - 65535.
Object type | Type of object referencing the Vista number. Can be one of the following: Database Phys. file FI Vista el. DA Vista el.
DBnr / Fnr | Database and file number identifying the file uniquely in a network.
Environment | Environment specified with the Vista element to restrict access to the data.

### Layout of Network Lists

Network lists contain the network IDs.

### Output Options for Network Retrieval

The output options valid for this object type are identical to those for object type dataspace. See Output Options for Dataspace Retrieval.

### On this page

- Network Maintenance Menu
- Add a Network Screen
- Network-Specific Maintenance
- Network Retrieval