Many applications require complex master-detail relations that involve more than two blocks. To create such relations, simply define as many individual relations as needed.
There is no practical limit to the number of relations that can be defined in a form. Further, any block can be the master or detail in more than one relation, and a block that is the master in one relation can be the detail in another.
When you create complex master-detail relations, Oracle Forms automatically adjusts the existing triggers to manage the relations you define.
Three of the most common types of complex master-detail relations are: