A homogenous distributed database is which of the following?

Solution (By Examveda Team)

A homogeneous distributed database refers to a distributed database system where the same Database Management System (DBMS) software is used at each location or node, and data are distributed across all nodes.

Option A: The same DBMS is used at each location and data are not distributed across all nodes.
This scenario describes a homogeneous environment where the same DBMS software is used at each location, but the data may not be distributed across all nodes. In such cases, data may still be centralized or distributed selectively based on the system's design and requirements, rather than being distributed across all nodes.

Option B: The same DBMS is used at each location and data are distributed across all nodes.
This option accurately describes a homogeneous distributed database. In such an environment, the same DBMS software is installed and used at each location or node, and data are distributed across all nodes. Each node in the distributed system stores a portion of the data, and the DBMS coordinates data access and management across the distributed environment. This configuration enables scalability, fault tolerance, and load balancing.

Option C: A different DBMS is used at each location and data are not distributed across all nodes.
This scenario represents a heterogeneous environment where different DBMS software is used at each location, but the data may not be distributed across all nodes. In such cases, data distribution may be selective or centralized, and the use of different DBMS platforms introduces additional complexity in data management and integration.

Option D: A different DBMS is used at each location and data are distributed across all nodes.
This option combines aspects of both homogeneous and heterogeneous distributed databases. It describes a scenario where different DBMS software is used at each location, but data are still distributed across all nodes. This configuration can introduce challenges related to interoperability and data integration between disparate DBMS platforms.

Therefore, in the context of a homogeneous distributed database, the correct option is The same DBMS is used at each location and data are distributed across all nodes (Option B).