Database _verified_

: An access control gatekeeper that verifies user identities, enforces encryption, and restricts access via Role-Based Access Control (RBAC). Transaction Management and the ACID Protocol

: Guarantees that once a transaction commits, its changes are permanently recorded in non-volatile storage, surviving even a sudden system crash. Performance Optimization Strategies database

Today, the landscape is diverse. databases attempt to combine the scalability of NoSQL with the ACID guarantees of SQL. Multi-model databases (like PostgreSQL now supporting JSON) allow a single database to handle relational, document, and graph data. The cloud has also become the default deployment model, with DBaaS (Database as a Service) offerings from AWS, Azure, and Google Cloud. : An access control gatekeeper that verifies user