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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
Q64: What is the main disadvantage of database sharding?
Improves scalability
Increases latency
Simplifies design
Reduces cost
Enhances security
Q65: Which of these is a NoSQL database?
PostgreSQL
MongoDB
MySQL
Oracle
SQL Server
Q66: Which type of database is Oracle?
Relational
Hierarchical
Network
Key-Value
Graph
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