Question
In the question below, three statements are given
followed by the conclusions. You have to take the given statements to be true even if they seem to be at variance with commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts. Statements: Only a few Years are Months. All Months are Weeks. Some Weeks are not Days Conclusions: I. All Years can be Weeks II. Some Months are not daysSolution
Some Years are Months (I) + All Months are Weeks (A) β Some Years are Weeks (I) β Probable conclusion β All Years may be Weeks (A). Hence conclusion I follows. All Months are Weeks (A) + Some Weeks are not days (O) β No conclusion. Hence conclusion II does not follow.
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: