In this exponential growth age and frequent disruption, data has to be really secure, integral, and accessible. DBMS plays a keynote in all these aspects. This report reviews the backup and recovery techniques of four DBMSs: Cassandra, MongoDB, Neo4j, and Oracle. It discusses their efficacy in restoring data loss and maintaining schema integrity. This study throws light on the challenge of complete data and schema recovery considering operational nuances and system-specific requirements. The recovery processes were recreated in the controlled environments by using hands-on experimentation. Recovery percentages for each DBMS were computed from recovered data. The results of the study indicate that 100% success rate for all systems, which means these systems do not fail in case of a disaster. These results give critical insight into the reliability and application-specific advantages of each DBMS in guiding database administrators in the design of resilient systems.