Write a Java program An educational institution wishes to maintain a database of its employees. The database is divide into a number of classes whose hierarchical relationships are shown in fig. The fig. also shown the minimum information required for each class. Specify all the classes and define methods to create the database and retrieve individual information as and when required.

Write a Java program An educational institution wishes to maintain a

1.	Write a Java program An educational institution wishes to maintain a database of its employees. The database is divide into a number of classes whose hierarchical relationships are shown in fig. The fig. also shown the minimum information required for each class. Specify all the classes and define methods to create the database and retrieve individual information as and when required.
Answer» Use an ARRAY or VECTOR for this as you can retrieve data by predefined methods of ARRAYLIST and Vector.