plsql Object Types
Remarks
It is important to note that an object body may not always be necessary. If the default constructor is sufficient, and no other functionality needs to be implemented then it should not be created.
A default constructor is the Oracle supplied constructor, which consists of all attributes listed in order of declaration. For example, an instance of BASE_TYPE could be constructed by the following call, even though we do not explicitly declare it.
l_obj := BASE_TYPE(1, 'Default', 1);
