View links

View links : 
1) relationship between 2 VO’s 

2) All View links end with VL ex- Dept Emp VL 

 *If we want to perform DML operation on master detail data then we need to have entity Association *if we need to just display master detail data on the page then go for view links.

Types of View Objects

Types of View Objects:
1) Automatic VO-when DML operations required
2) Manual VO-just to view no EO required
 3) Property VO –no need of DB attributes ex- for displaying some of attributes ( with out DB table – transient attributes )
4) Validation VO- Validates the data entered and throws a message.

View Objects and View Links:

View Objects and View Links:
View object accesses the result set of sql statement either it can be based on EO or a plain sql query .all the view objects end with VO ex- Employee VO
2) when you create VO one subclass will generate *oracke.apps.fnd.framework.server.OA.viewobjectImpl.*