How secure is Derby DB?

I just started with Derby DB yesterday. I have a small concern that when i connect to a Derby Db, i dont have to specify any username and password, unlike MySQL server and the stuff. So isn开发者_运维知识库't it possible for some other person who knows my database name to access it without any privillege?

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Derby DB doesn't require authentication by default. But it is possible to set it up if required.

Additional info here..

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In addition to authentication, Derby also supports authorization, disk encryption, network encryption, etc. There are a lot of security features in Derby. You'll want to spend some time studying http://db.apache.org/derby/docs/10.8/devguide/devguide-single.html#cdevcsecuree