A function prototype is ____.
A. a definition, but not a declaration
B. a declaration and a definition
C. a declaration, but not a definition
D. a comment line
Answer: C
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Consider the relation schema of Exercise 5.24. Write the following queries using TRC and DRC.
a. Find all customers who are interested in every house listed with Agent “007”. b. Using the previous query as a view, retrieve a set of tuples of the form feature, customer where each tuple in the result shows a feature and a customer who wants it such that Only the customers who are interested in every house listed with Agent “007” are considered; and The number of customers interested in “feature” is greater than 2. (If this number is 2 or less, the corresponding tuple feature, customer is not added to the result.) This part of the query cannot be conveniently expressed by TRC or DRC because they lack the counting operator. However it is possible nevertheless (and is not hard).
COUNTIF is an example of a logical function
Indicate whether the statement is true or false
To assist with controlling orphaned and dormant accounts, what can be used to indicate when an account is no longer active?
A. password expiration B. account expiration C. last login D. account last used
To present someone else’s work as your own is plagiarism, which is both a violation of copyright law and an unethical act.
Answer the following statement true (T) or false (F)