iX V6.5 (30391-90011)

248 Chapter6

Host Language Access

ORDERS Database Model Program

Main Body of Program

BEGIN MAIN LINE

* OBJECTIVE: The main line contains the logic of this application.

* It displays all functions, accepts a selection,

* then calls the appropriate routines. The execution

* of this program stops after the database is closed.

* ACCESS: Not applicable.

* CALLED BY: Not applicable.

* CALLS: Open_The_Database

* Get_Sales_For_Date

* Get_A_Customer_Record

* Get_A_Product_Record

* List_All_Customers

* Add_A_Product

* Update_A_Customer

* Delete_A_Product

* Rewind_Customer_Set

* Get_Data_Item_Info

* Get_Error_And_Explain

* Close_The_Database

START LOOP

DISPLAY the list of functions

The following illustration depicts one way of displaying the list of functions for this

program.