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Database Administrator (DBA)
Database Administrator (DBA) is an IT professional responsible for managing, maintaining, and securing an organization's databases to ensure data is reliable, efficient, and accessible to authorized users
Quiz Questions
Q1: What is the main disadvantage of database sharding?
Improves scalability
Increases latency
Simplifies design
Reduces cost
Enhances security
Q2: Which of these is a NoSQL database?
PostgreSQL
MongoDB
MySQL
Oracle
SQL Server
Q3: Which backup type captures only changes since the last full backup?
Full
Differential
Incremental
Transaction Log
Mirror
