System

An application can be documented with a Predict object of type System. See System Types for a list of possible system types.

This document covers the following topics:

For general information on how to manage objects (for example, how to add or copy an object), see the Object Description documentation.

System Types

The table below contains a list of all valid system types.

Code System Type
A Application Library
B Base Application
C Conceptual. Used to outline the preliminary description of an application in the design phase.
G 3GL Application
O Compound Application
P DB2 plan. Used to document a DB2 application.

Add/Modify System

When you add a system, you first have to specify the system type in the Type dialog box.

Select type

When you choose the OK button, a system type-specific window appears. The system type is indicated in the title bar. Different tabs with different names are used, depending on the system type:

  • Implementation Pointer tab (3GL Application and Application Library)

  • DB2 Plan Attributes tab (DB2 Plan)

  • Base Application Attributes tab (Base Application)

For system types Compound Application and Conceptual only the tabs for the global attributes are provided.

The following is an example of the Implementation Pointer tab.

Implementation pointer

Note:
Parameters not listed here are described under Global Attributes.

Parameters
Implementation pointer
This information is shown on the Implementation Pointer tab (types 3GL Application and Application Library).
Library The name of the library.
For type G: The library cannot be changed if XRef data exists (the library is used by a 3GL program).
User system Fnr The file number of the user system file (FUSER).
User system DBnr The database number of the user system file.
DB2 plan name This information is shown on the DB2 Plan Attributes tab (type DB2 Plan). Unique DB2 plan name.
Profile
This information is shown on the Base Application Attributes tab (type Base Application).
Name The name of the profile.
Fnr The number of the user system file.
DBnr The number of the database in which the user system file is located.
Port This information is shown on the Base Application Attributes tab (type Base Application). The port number.
Server name This information is shown on the Base Application Attributes tab (type Base Application). The name of the server.
Development platform This information is shown on the Base Application Attributes tab (type Base Application). The development platform. Enter one of the following values:

  • MAINFRAME

  • UNIX

  • PC

  • VMS.

This parameter specifies for which type of server the application is developed.

System-Specific Maintenance

Identifying Systems

Systems documented with Predict objects of type System can be identified with three parameters: library, file number and database number. The three possible combinations of these parameters are shown below.

Library Y Y Y
File number   Y Y
Database number     Y

Purge System

Predict objects of type System are purged with the Delete command.

The following rules apply to this function:

  • A system of type A (Application Library) cannot be deleted if it is linked to one or more systems via association "Has library SY".

  • A system of type G (3GL application) cannot be deleted if XRef data exist.

  • The following objects are deleted:

    • the system object

    • all links to child objects

    • all links from parent objects

Rename System

Use this function to change the ID and/or type of a system object. The following restriction applies:

  • You cannot change the type of a system of type 3GL application for which XRef data exists.

  • You cannot change the type of a system of type A (Application Library) if it is linked to one or more systems via association "Has library SY".