1. ISOM3260
Database Design and Administration
Lab 6: Oracle Forms Developer IV –
search engine and insert multiple records

2. Agenda
Oracle Project
Analysis, Design
Implementation,
Maintenance
Oracle Forms
Developer
SQL Tools
Oracle Reports
Developer and
integration

3. Agenda
• Validation Triggers
• Multiple Datablocks in one canvas (VERY IMPORTANT!)
• Write a trigger to retrieve multiple records from the database
• Write a trigger to insert multiple records from the database

4. VERY IMPORTANT!
• Check the objects you
just created belong to
the dummy datablock
(drag the object back to
the right place)
• Move the datablocks so
that the datablock of
the LOGIN page goes
first

5. Why do we need validation triggers?
There are some instances
entered by users that are
not valid!!!!
5

6. Validation Triggers in Forms Developer
• Validation triggers ensure users insert correct
values in the system
• Example:
– Student_ID should be in 8‐characters
– Year should not exceed 5 and
should not less than 0
6

7. Review the codes of Validation Triggers
7

8. Multiple Datablocks in One Canvas
• An user interface involving data from more
than one tables
• For example:
– Search engine
• Search keyword (Manual datablock)
• Results (Datablock that is created base on a table)

9. Illustration 1: Create a canvas with
multiple datablocks (1)

10. Illustration 1: Create a canvas with
multiple datablocks (2)
• Basic Steps
– Create a blank canvas
– Create a manual datablock for capturing search
keyword

11. Illustration 1: Create a canvas with
multiple datablocks (3)
• Basic Steps
– Create a datablock from COURSE table using
Datablock Wizard
– Put the datablock on
the existing canvas using
Layout Wizard

12. Forms Styles (1)
• Datablock can be presented in 2 different
styles
• 2 Form Styles
– Form Style
• For showing one instance
– Tabular Style
• For showing multiple instances

13. Forms Styles (2)
Form Style
Tabular Style

14. Code Review (I)
• Search Engine
– Search engine code
– Retrieve multiple records using FOR Loop
• View Detail
– Push button under Tabular style
Reference for:
Search records, View order records,
View shopping cart, Logout (CLEAR_BLOCK
command)

15. Code Review (II)
• Insert multiple student records
– Insert multiple records using Simple Loop
Reference for:
Make Purchase

16. Project Work
1. Search Engine
– A trigger that retrieves multiple records from Product
table, given a particular search keyword
2. View product detail
– A trigger that retrieves product detail from Product table
to the next page, given a Product ID
3. Add to shopping cart
– A trigger that inserts Mem ID, Pro ID, Quantity into
Shopping Cart Line table
4. Retrieve shopping cart
– A trigger that retrieves multiple records from Shopping
Cart Line table, given a particular Mem_ID

17. • 5. Make Purchase