A 2 X 5 table has:

A) 20 total cells. B) two rows and five columns.
C) 15 total cells. D) five rows and two columns.


B

Computer Science & Information Technology

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Suppose that transactions T1 and T2 can be decomposed into the subtransactions T1 : T1,1, T1,2 and T2 : T2,1, T2,2 such that each subtransaction individually maintains the consistency constraints of the database. Instead of guaranteeing that all schedules involving T1 and T2 are serializable, suppose that a concurrency control guarantees that all subtransactions are always executed serializably.

a. Will T1 always be serializable with T2? Explain. b. Will integrity constraints be maintained by all possible schedules? c. What possible problems might arise if the concurrency control schedules transactions in this way?

Computer Science & Information Technology

When creating an AutoKeys macro group, the Ctrl key is represented by a ____.

A. pound sign (#) B. percent sign (%) C. plus sign (+) D. caret (^)

Computer Science & Information Technology

When objects contain pointers, it is a good idea to create an explicit __________ function.

a. destructor b. copy constructor c. static constructor d. inline constructor e. None of these

Computer Science & Information Technology

Design an experiment for a paged system to demonstrate the phenomena of temporal and spatial locality.

What will be an ideal response?

Computer Science & Information Technology