Which of the following is the correct function definition header for the getAge function which is a member of the Person class?

Is an example of a(n) ________

Fill in the blank(s) with correct word

A pair of (partial) database operations, p and q, are said to forward-commute if, in every database state in which both p and q are defined, the sequences p, q and q, p are both defined and, in both sequences, p and q return the same values and the final database state is the same.

a. Describe howforward commutativity can be used in the design of a deferred-update pessimistic concurrency control. b. Give a conflict table for such a control for the account object described in Figure 20.18.