A method that performs some action other than returning a value is called a __________ method.
(a) null
(b) void
(c) public
(d) private
(b) void
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Locks and keys and CD players are examples of polymorphism: “one interface, many methods.” Can you think of another example?
What will be an ideal response?
The last section of this chapter presented four main rules that characterize updatable views in SQL. The third rule states that if the WHERE clause contains a nested subquery, none of the tables mentioned in that subquery (explicitly or implicitly) can be the table used in the FROM clause of the viewde?nition.
Construct a viewthat violates condition 3 but satis?es conditions 1, 2, and 4 for updatability, such that there is an update to this viewthat has two di?erent translations into the updates on the underlying base relation.
What are some reasons that adopting a new DBMS solution such as Oracle would not be considered a feasible option for Gaming Master?
What will be an ideal response?
____________________ is the assurance that an entity is who it claims to be.
Fill in the blank(s) with the appropriate word(s).