ADF Buisiness components

In ADF using business components developers no need to write the infrastructure code
  a) Connection to database
  b) Retrieval of data from the database
  c) Locking mechanism of db records
  d) Transaction management

All above actions are handled by the ADF framework.Also ADF supports declarative development and reuse of the business logic through multiple sql based views.

Some of the high level features of business components are

- Simplify data access
- Enforcement of business domain validation  and business logic
- Supporting sophisticated UIs with multipage units of work
- Implementing high performance service oriented architecture
- Streamlining application customization

Following are the main components of business components

- Entity Objects
 Entity objects represents rows in database .Entity objects ensure business logic are consistently enforced.It supports associations to other entity objects
- View Layer
Represents a SQL query.Enables re-use of business logic through multiple sql based views.

- Application Modules
Is a transnational component that UI client use to work with application data. Application Module holds view objects and other custom methods.