Answer Posted / rohit kumar singh
In many of the cases an entity type has numerous sub grouping of its entities that are meaningfull . Let understand with an example . EMPLOYEE entity type may be grouped further into ... SECRETARY , MANAGER , ENGINEERand so on .
The set of entities in each of latter grouping is a subset of the entities that belongto the EMPLOYEE entity set .
We call each of these subgrouping a subclass of the EMPLOYEE entity type , and the EMPLOYEE entity type is the superclass gor each of these subclasses.
| Is This Answer Correct ? | 0 Yes | 2 No |
Post New Answer View All Answers
What is java life cycle?
How do I type unicode?
What is an interface in java? Explain
What is the difference between conversation & casting?
What is wrapper class example?
List the different types of classloaders in java.
Why does my function print none?
What is the purpose of methodology?
What is difference overloading and overriding?
What is a subsequence of a string?
Is java good for beginners?
What is the final class modifier?
which class is the wait() method defined in? : Java thread
How is string stored in java?
java program with complete 4 oops concepts implemented example
