Real-time data synchronization from an external database.

@mohana_cse06
Is it possible to implement a real-time data synchronization method with an external Database ? If so, please explain the scenarios.

For example I have an external database with a customer table. In future I might be applying changes to the table (like adding or deleting customer or modifying an existing customer record etc). What I want to figure out is that is there any way to implement a real-time synchronization method (via XMLPort or any other means). Any changes made in external table should reflect in the table in NAV Database.

Thank you