Describe the main challenges associated with data fragmentation in a Distributed DBMS.

1) A Distributed Database Management System (DBMS) is a software system that manages and provides access to a database that is spread across multiple physical or logical locations.

2) Unlike a traditional centralized DBMS, which operates on a single server, a distributed DBMS coordinates and controls data stored on multiple nodes or servers connected via a network.

3) They are used in scenarios where large volumes of data need to be accessed and manipulated by multiple users or applications across different locations. They find applications in various domains, including banking, e-commerce, telecommunications, and large-scale web applications, among others.