Worksheets4th Quiz Characteristics of DDBMS
Total questions: 10
Worksheet time: 5mins
Which function analyzes data requests for syntax correctness
Mapping
Transformation
Validation
Formatting
What does query optimization aim to achieve
Finding the best access strategy for data retrieval
Increasing database size
Simplifying the database structure
Limiting user access
Which feature determines the location of data fragments
Security
I/O interface
Backup and recovery
Mapping
purpose of the I/O interface
Read or write data to local storage
Decompose requests
Optimize queries
Manage user permissions
ensures data privacy in a distributed database
Backup and recovery
Formatting
Security
Transaction management
What does concurrency control manage
User authentication
Data backup processes
Data fragmentation
Simultaneous data access and consistency
ensures transactions move between consistent states
Formatting
Data validation
Transaction management
Query optimization
How does a distributed database enhance reliability
Centralizes all critical functions
Stops all operations during failures
Requires manual intervention for recovery
Continues operation even when some components fail
significance of backup and recovery
Optimize query performance
Ensure availability and recoverability after failures
Allow for data retrieval without failures
Ensure data privacy at each site
Why is transparent access important for users
Reduces security needs
Allows knowledge of data storage locations
Simplifies interaction with complex queries
Enables direct management of fragments
