Question
A boy can swim in water with a speed of 12 km/hr in
still water. If the speed of the stream is 5 km/hr, what will be the time taken by the boy to cover 68 km downstream?Solution
Downstream Speed = (12 + 5) km/hr = 17 km/hr Time taken = 68/17 = 4 hours
Shadow paging in recovery eliminates the need for:
Which of the following is a type of database index?
In relational algebra, the operation that combines tuples from two relations using common attribute values is:
What is the maximum number of processes that can be in the Ready state?
A transaction that reads a value then later sees a different value because another transaction updated and committed in between experiences which anomaly?
MVCC (Multi-Version Concurrency Control) ensures:
Which of the following is true about ACID properties in DBMS?
Which normal form removes partial dependency?
Which of the following is not part of the process control block (PCB)?
In an E-R Diagram, entities are typically represented by:
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