1. Queries and Lookups

2. Simple Department Form

3. The Simple Form
Insert
Save
LOVBUT

4. Adding a Department

5. Query By Example

6. More Querying
Fetch all departments that begin with ‘SAL’

7. Adding Manager Info

8. Revised Module -- Insertion

9. Querying with Revised Module
Manager Fields do not fill in automatically
So we would like to to improve the querying capability
Unless form is primarily for data entry.
One method: base form on a view

10. Defining a View

11. Basing Module on View

12. Module Diagram View is considered a table on module side.
No internal structure.

13. The Form Querying now works as desired
But no lookup LOV for data entry!
Maybe we can add a lookup

14. Add a Lookup
Note a view can have a primary key
and foreign keys!

15. The New Version

16. Unfortunately ... Form Compiler Blows UP
Diagnostic messages about .cpp files
‘Tell your Oracle Representative’
Lesson, don’t add lookups to a table already in a view!
But there is another way, closely related ...

17. Module Views

18. Module View Looks Like Ordinary Module

19. Module Component API Oracle Designer creates the view for you,
when you tell it to.
Use MCAPI.
Creates DDL for the view

20. The Underlying View CREATE OR REPLACE VIEW cgv$MDPT_MV_DEPARTMENT
(DNUMBER,DNAME,. . ., L_EMP_LNAME) AS
SELECT
DPT.DNUMBER DNUMBER,
DPT.DNAME DNAME, ,
L_EMP.LNAME L_EMP_LNAME
FROM
EMPLOYEES L_EMP,DEPARTMENTS DPT
WHERE DPT.EMP_EMPID = L_EMP.EMPID (+) /

21. The View Based Form

22. Querying

23. Inserting New Data

24. Adding an Item Group