Computers and Technology, 25.01.2021 23:40 maleyjustinr
Consider an entity set Person, with attributes social security number (ssn), name, nickname, address, and date of birth(dob). Assume that the following business rules hold: (1) no two persons have the same ssn; (2) no two persons have he same combination of name, address and dob. Further, assume that all persons have an ssn, a name and a dob, but that some persons might not have a nickname nor an address.
A) List all candidate keys and all their corresponding superkeys for this relation.
B) Write an appropriate create table statement that defines this entity set.
Answers: 2
Computers and Technology, 22.06.2019 14:30, qxchung7310
The “rule of 72” is used to approximate the time required for prices to double due to inflation. if the inflation rate is r%, then the rule of 72 estimates that prices will double in 72/r years. for instance, at an inflation rate of 6%, prices double in about 72/6 or 12 years. write a program to test the accuracy of this rule. for each interest rate from 1% to 20%, the program should display the rounded value of 72/r and the actual number of years required for prices to double at an r% inflation rate. (assume prices increase at the end of each year.)
Answers: 1
Computers and Technology, 23.06.2019 10:30, badpotterchris
How would you categorize the software that runs on mobile devices? break down these apps into at least three basic categories and give an example of each.
Answers: 1
Computers and Technology, 23.06.2019 14:30, naomi20044
Select the correct answer. andy received a potentially infected email that was advertising products. andy is at risk of which type of security threat? a. spoofing b. sniffing c. spamming d. phishing e. typo-squatting
Answers: 2
Computers and Technology, 23.06.2019 20:30, batmandillon21
1. for which of the following are you not required to signal beforehand? a. changing lanes b. speeding up c. stopping
Answers: 2
Consider an entity set Person, with attributes social security number (ssn), name, nickname, address...
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