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Resolved Question
What are the types of inheritence models and describe how they work like vertical inheritence and horizontalDetails:
asked by: hippo93 on: Jul 25, 2009 
Best Answer ! ! !nameit 's Answer ( this answer is maked as best answer of this question at: Jul 29, 2009 )
There are three types of inheritance mapping in hibernate
1. Table per concrete class with unions
2. Table per class hierarchy
3. Table per subclass
Example:
Let us take the simple example of 3 java classes.
Class Manager and Worker are inherited from Employee Abstract class.
1. Table per concrete class with unions
In this case there will be 2 tables
Tables: Manager, Worker [all common attributes will be duplicated]
2. Table per class hierarchy
Single Table can be mapped to a class hierarchy
There will be only one table in database called 'Employee' that will represent all the attributes required for all 3 classes.
But it needs some discriminating column to differentiate between Manager and worker;
3. Table per subclass
In this case there will be 3 tables represent Employee, Manager and Worker
1 comments answered on: Jul 30, 2009
Other Answer (2)
There are three types of inheritance mapping in hibernate
1. Table per concrete class with unions
2. Table per class hierarchy
3. Table per subclass
Example:
Let us take the simple example of 3 java classes.
Class Manager and Worker are inherited from Employee Abstract class.
1. Table per concrete class with unions
In this case there will be 2 tables
Tables: Manager Worker [all common attributes will be duplicated]
2. Table per class hierarchy
Single Table can be mapped to a class hierarchy
There will be only one table in database called 'Employee' that will represent all the attributes required for all 3 classes.
But it needs some discriminating column to differentiate between Manager and worker;
3. Table per subclass
In this case there will be 3 tables represent Employee Manager and Worker
geniuspear answered on£ºJul 26, 2009 0 comments Table per concrete class using implicitpolymorphism can also be added as inheritance mapping in hibernate
gin answered on£ºJul 28, 2009 0 comments