Changes

If you plan to perform concurrent read and write operations on a single database,youshould use the client/server architecture is the right choicearchitecutre or deploy it as web application. You may safely open the same databasein different JVMs (Java virtual machines) for read-only access, and you won’t encounter anyproblems when reading from or writing to different databases, but your update operations willbe rejected if the database to be written to is currently opened by another virtual machine.