A series of adjacent cells is called a ________
A) range B) field C) table D) record
A
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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?
How many classes are there in a program/app?
a) 0 b) 1 c) more than 1 d) The number of classes may vary.
What is Variable scope?
What will be an ideal response?
A _______is a complex, integrated circuit.
a. vacuum tube b. transistor c. microprocessor