How to open .db file?

Hi:
I am new to java batabase.
I just join the scjd exam.
From the document that sun gave me,
I found a db-2x3.db file.
Can anyone teach me how to open this file?
And also what kinds of database system is best for java scjd exam.
Thanks

Hi Tien Fu,
Welcome to JavaRanch.
As Lasse mentioned in this thread, the database format is a custom one designed for these assignments.
You should have received a file called instructions.html. Inside the instructions you will find a detailed description of the database format. You have to write a class or classes to read this file.
There should be one class, called Data.java, which implements the interface described in the instructions, which is the public access to the database.
Does this make sense?
Regards, Andrew

Hi Tien Fu,
To give you some ideas to work with

some people are using Random Access File to access the database, as discussed (briefly) in this thread

some are using File Chanels, as discused in this thread, and this thread
Regards, Andrew

I deleted the duplicate post of this thread. This seems to have the best answers in this one anyway.

Tien, try to avoid duplicate posts, either in the same forum or across forums. Thanks
Thanks Andrew.
Mark
[ June 24, 2003: Message edited by: Mark Spritzler ]