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In timestamp ordering protocol, suppose that the transaction Ti issues read(Q) and TS(Ti)
Consider the following two statements about database transaction schedules: I. Strict two-phase locking protocol generates conflict serializable schedules that are also recoverable. II. Timestamp-ordering concurrency control protocol with Thomas’ Write Rule can generate view serializable schedules that are not conflict serializable. Which of the above statements is/are TRUE?
Select the phrase/connector from the given three options which can be used to form a single sentence from the two sentences given below, implying the same as expressed in the statement sentence. Social issues are distinguished from economic issues. Some issues have both social and economic aspects. 1. When some issues 2. However some issues 3. Whenever social issues
In a database system, unique timestamps are assigned to each transaction using Lamport’s logical clock. Let TS(T1) and TS(T2) be the timestamps of transactions T1 and T2 respectively. Besides, T1 holds a lock on the resource R, and T2 has requested a conflicting lock on the same resource R. The following algorithm is used to prevent deadlocks in the database system assuming that a killed transaction is restarted with the same timestamp. If TS(T2) < TS(T1) then T1 is killed else T2 waits. Assume any transaction that is not killed terminates eventually. Which of the following is TRUE about the database system that uses the above algorithm to prevent deadlocks?
The default timestamp ordering protocol generates schedules that are
State true or false: The Thomas write rule has a greater potential concurrency than the timestamp ordering protocol
In class V while discussing the chapter 'Whose Forests?', the teacher narrated a true anecdote of Suryamani who started a centre named 'Torang' to deal with : A) Issues of land and livelihood B) Issues of hunger C) Issues of forests  D) Issues of Kuduk culture 
What are the challenges faced by refugees in refugee camps?
1. Human issues: i.e. Security of food, Drinking water, Housing, etc.
2. Social issues: i.e. Family ties, Neighbours, Children, Education, etc.
3. Environmental issues: i.e. Waste disposal and Management.
4. Health issues: i.e. Sanitary, Medicine, Doctors, Nursery, Hospitals. etc.
Consider the following three statements about link state and distance vector routing protocols, for a large network with 500 network nodes and 4000 links. [S1] The computational overhead in link state protocols is higher than in distance vector protocols. [S2] A distance vector protocol (with split horizon) avoids persistent routing loops, but not a link state protocol. [S3] After a topology change, a link state protocol will converge faster than a distance vector protocol. Which one of the following is correct about S1, S2, and S3?
What is the difference, in seconds, between the current timestamp in the GMT time zone and the current timestamp in your local time zone?