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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
Q970: Which isolation level prevents dirty reads but allows non-repeatable reads?
Read Uncommitted
Read Committed
Repeatable Read
Serializable
Snapshot
Q971: What does ACID stand for in databases?
Atomicity, Consistency, Isolation, Durability
Accuracy, Control, Integrity, Distribution
Access, Consistency, Integration, Durability
Atomicity, Concurrency, Isolation, Data
Accuracy, Completeness, Integrity, Durability
Q972: What is the role of a database index?
Increase query speed
Decrease query speed
Encrypt data
Manage user roles
Handle transactions
