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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
Q961: What is the main disadvantage of database sharding?
Improves scalability
Increases latency
Simplifies design
Reduces cost
Enhances security
Q962: What is a clustered index?
Index storing copy of data
Index that defines sort order of rows
Index that compresses data
Index for foreign keys
Temporary index
Q963: What is the default port number for MySQL?
1521
3306
5432
8080
1433
