1. Oracle Application Express (APEX)
Project Implementation for
COSC 4120 Database Applications
Lab 6

2. Advanced Topics Work with table lookups on composite primary key
Report and form
User friendly pages
Validations
Navigate between pages
Publish the application and create test users
Export and import the application

3. Composite Primary Key Tables
Tables such as
LAWYER_SPECIALTY
CASE_CONTACT
Work with composite primary key tables

4. Creating Report and Form
Create a report and a form for the table
Create page  Form  Form on a table with report
Define report page
Implementation: Interactive
Page name: Lawyer Specialty
Region title: Lawyer Specialty
Breadcrumb: Breadcrumb
Breadcrumb entry name: Lawyer Specialty
Breadcrumb parent entry: Home

5. Defining the Report

6. Defining the Report Define report page
Data source: LAWYER_SPECIALTY (table)
Tab options: Use an existing tab set and create a new tab within the existing tab set
Tab set: TS1
New tab label: Lawyer Specialty
Select columns:
LAWYER _ID and SPECIALTY_ID
Edit link image: default

7. Defining the Report

8. Defining the Form Define form page Page name: Lawyer Specialty Entry
Region title: Lawyer Specialty Entry
Primary key type: Managed by Database (ROWID)
Select columns: both columns
Process options: Insert, Update, Delete
Confirm and create

9. Defining the Form

10. Running Report and Form
Report and form pages are working
List, edit, create, update, delete

11. Making Pages User Friendly
Instead of showing ids, descriptive fields should be displayed
Report page
Modify report region source
SELECT LS.ROWID, L.LAST_NAME, L.FIRST_NAME, S.DESCRIPTION
FROM LAWYER_SPECIALTY LS, LAWYER L, SPECIALTY S
WHERE LS.LAWYER_ID = L.LAWYER_ID AND LS.SPECIALTY_ID = S.SPECIALTY_ID
ORDER BY LAST_NAME, FIRST_NAME, DESCRIPTION

12. Making Pages User Friendly
To show desired columns in an active report
Use Action  Select columns
May save the report as default report settings

13. Making Pages User Friendly
Form page
Change labels to Lawyer and Specialty
Change both to select list (LOV)
LAWYER_ID and SPECIALTY_ID

14. Making Pages User Friendly
select LAST_NAME || ', ' || FIRST_NAME as display_value, LAWYER_ID as return_value
from LAWYER
order by 1

15. Adding Validations Maintain entity integrity
Provide user friendly error message on the form page
Validation script
SELECT *
FROM LAWYER_SPECIALTY
WHERE LAWYER_ID = &P??_LAWYER_ID.
AND SPECIALTY_ID = &P??_SPECIALTY_ID.
Use your page number
Notice the ending period for substitution variables
SELECT * FROM LAWYER_SPECIALTY WHERE LAWYER_ID = &P??_LAWYER_ID. AND SPECIALTY_ID = &P??_SPECIALTY_ID.

16. Adding Validations
Edit the form page, page processing  create validation
Validation level: Page
Validation name: Insert validation
Error display location: Inline in Notification
Validation type: SQL  NOT Exists
Validation code: {the validation script}
Error message: The lawyer is in the selected specialty.
When button pressed: Create
Create a similar validation for update

17. Adding Validations

18. Adding Validations

19. Page Navigation Navigation controls are shared components
Create navigation control at the application level on the shared components page
Tabs
Navigation bar entries
Breadcrumbs
Lists

20. Tabs Tabs are grouped in collections called a tab set
Each tab must be part of a tab set
Two different types of tabs
Standard tabs
For only one level of tabs with each tab associated with a particular page
Parent tabs
Parent tab set acts as a container for a group of standard tabs
Define more contextual list of tabs

21. Managing Tabs To manage tabs Add new parent tab
Shared components  Navigation  Tabs  Manage tabs
Add new parent tab
The first parent tab replaces the pseudo parent tab

22. Managing Tabs Move a standard tab between parent tabs
Edit the tab and switch Standard Tab Set

23. Managing Tabs Add more standard tabs under parent tab
In order to show tabs, make sure set to the appropriate Page Template and Standard Tab Set for each page
Right click title of the page  Edit  Display attributes

24. Managing Tabs

25. Navigation Bar Entries
Navigation bar entries offer an easy way to move users between pages
A navigation entry enables application to display a link for quick access on pages
To access navigation bar entries
Shared components  Navigation  Navigation bar entries
Create  From scratch  Navigation to URL
Entry label: Help
Page: {a help page} and check [Printer friendly] (optional)
Create

26. Publish Application Publish the application with URL Manage APEX users
Manage APEX users
APEX home  Administration  Manage users and groups
Create a test user
Username:
address:
User is a developer: No
Password:

27. Application Export and Import
Application home  Export/Import  Export