Tutorial for Designer/2000
and Developer/2000

Lesson 4, page 2

Second Method

  1. If you are in the Designer/2000 launchpad, then select Function Hierarchy from it. (See Figure 4.2b).

    Figure 4.2b

    Figure 4.2b: Selecting the Function Hierarchy Diagrammer from the Designer/2000 launchpad

  2. If you are logging in, then Oracle will prompt you to select an application system . Select STUDENT. Otherwise it will open the Function Hierarchy Diagrammer window with one tool palette and a blank screen. (See Figure 4.3b).

    Figure 4.3b

    Figure 4.3b: The Function Hierarchy diagrammer window when opening from the Designer/2000 launchpad

    Irrespective of which method you use to open the Function Hierarchy Diagrammer, you must follow instructions from step 3.

  3. Since there are no function hierarchy diagrams in the system, we will create a new one. So select File -> New. (See Figure 4.4).

    Figure 4.4

    Figure 4.4: Selecting a new diagram from the File menu

  4. Immediately, the New Function window will pop up with Student Registration System listed as one of the options on which you can base your diagram. (See Figure 4.5).

    Figure 4.5

    Figure 4.5: The New Diagram window

  5. Select Student Registration System, and click OK. (See Figure 4.6). However, if you had wanted to create another diagram, then you should select Create Function. At this time we will ignore this option.

    Figure 4.6

    Figure 4.6: Selecting SRS as the process based on which the FHD will be created

  6. Immediately, you will see the function hierarchy diagram that Oracle has created for you listing all the processes and hierarchies that you had created using the Dataflow Diagrammer and the Process Modeller. (See Figure 4.7 for a zoomed out view of the diagram). If you have opened the FHD using the RON, then this new diagram will be named FHD2, otherwise it will be FHD1. Either way, it will not affect your diagram.

    Figure 4.7

    Figure 4.7: The initial function hierarchy diagram that Oracle creates

    You will note that it also lists all the processes that resulted from the decomposition. Now let us decompose the process Maintain Student Records into three processes, Insert Student Records, Update Student Records and Delete Student Records.

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