Hibernate framework depiction in JAVA bank management system

what does it mean to develop a hibernate framework depiction in bank management system using file handling in java? The usage of hibernate is directly associated with underlying files carrying the objects information. When a database query is executed i.e. insert, delete, update and search, objects will directly interact with the underlying file system. Can anyone explain what am I suppose to do??
FURTHER DESCRIPTION
When a basic database query is executed i.e. insert, delete, update and search, objects will directly interact with the underlying file system.
The system records following information of its customers.
 First Name
 Last Name
 Address
 Age
 Sex
 Date of birth
 Occupation
 Password
 Occupation
 Account Types
The account information of each customer comprise of following attributes
 account ID
 current balance
 date created
 Currency
 Annual interest rate.
The bank offers three different types of such accounts:
1. Basic Banking Account o Account can be opened with an initial/minimum deposit of Rs.1, 000.
o Withdrawal limit of RS 30,000 per day only
o Free e-banking facility to view account balance and statement of account is available
2. Saving account
o Account can be opened with an initial/minimum deposit of Rs.5,000.
o Account balance shouldn’t fall below Rs 5,000
o Withdrawal limit of RS 25,000 per day only
3. Current account
o No Minimum Balance
o No Withdrawal limit
Menu Option
Implement an application that keeps track of all the objects and store them in a file. The system administrator has the rights to perform following operations:
1. Whenever a new customer arrives his personal and account related information will be stored in the database. He should handle both the opening and closing a currently/existing account.
2. Add the functionality of money withdrawal, deposit and update the existing information accordingly.
3. Apply search on different combination of parameters including:
 Output the information of all the customers.
 Output account details of the customers registered within last 24 hours (time limit can change)
 Details of all the customers that own a particular type of account