Getting Started with ADF - Oracle ADF 11gR2 Development Beginner's Guide - page 30

The development stage is further classified into the following two approaches:
Top-down : The development of a UI page is done first, followed by the building of
business services. Placeholder data control is used to mock up the business service to
simulate enterprise data queries. This approach is mostly used for proof-of-concept
studies in which the applicaion's design and low are more important than the actual
business data.
Botom-up : The development of the business service is followed by the designing
of UI pages and task flows.
Sample application - employee directory application
It's easy to build a simple applicaion using the HR schema that is shipped with Oracle XE
Database. The requirements for building the applicaion are as follows:
JDeveloper 11.1.2.3.0 Studio Ediion : This is required to develop the ADF web
applicaion; we have installed this on Windows as a part of Chapter 1 , Installing
and Configuring JDeveloper IDE .
Oracle Database Express Ediion or any other Oracle DB : This is required for the
HRSchema setup for our sample applicaion.
Oracle Database 10 g Express Ediion is used at the ime of wriing the topic.
It's the user's choice to use either the 10 g or 11 g version. You may refer to
the following links:
Download: http://www.oracle.com/technetwork/
products/express-edition/downloads/index.html
Documentation http://docs.oracle.com/cd/
E17781_01/index.htm
The high-level development processes for the employee directory applicaion included in
this secion are as follows:
1. Create the applicaion workspace : Create a new applicaion and set up the
workspace for developing with ADF.
2. Model database objects : Set up the HRSchema database objects for the applicaion.
3. Create business components : Create ADF Business Components corresponding to
the DB objects.
4. Create the UI page : Use the UI components to represent the data on the page.
5. Bind the data to the UI components : Bind the exposed service to the UI
components through the data control and bindings.