________ is the result of someone's creativity and knowledge and usually is protected by copyrights.
What will be an ideal response?
Intellectual property, IP
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Assume that R and S are relations containing n R and n S tuples, respectively. What is the maximum and minimum number of tuples that can possibly be in the result of each of the following expressions (assuming appropriate union compatibilities)?
a. R ? S b. R ? S c. R ? S d. R × S e. R S f. R / S g. ?s=4(R) × ?s,t(S)
In a function, arguments are included inside the parentheses following the function name
Indicate whether the statement is true or false
Which of the following statements is false?
a) Set and Get methods can validate attempts to modify private data and control how that data is presented to the caller, respectively. b) If an instance variable were public, any client of the class could see the data and modify it, including setting it to an invalid value. c) public data allows client-code programmers to write code that depends on the class’s data format. If the class’s owner changes that format, any client code dependent on it would “break” and would need to be adjusted to the new format, making it subject to break again. d) All of the above are true.
Consider a graph signal f with its GFT ˆf = ? 0 ( ? `), that is, the signal is localized around zero frequency in the graph spectral domain. Prove that when the graph signal f is modulated to frequency ? k, the resulting graph signal is localized around frequency
