Which of the following represent an advantage of a surrogate key?
A) A surrogate key is always guaranteed to be unique
B) Surrogate keys are arbitrary and are not affected by changes in business rules
C) Both A and B
D) None of the above
C
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Trust consists of two basic components which are ______ and ______.
Fill in the blank(s) with the appropriate word(s).
Which of the following methods of collecting data has the highest response rate?
A) personal interviews B) telephone interviews C) mail D) Internet
If an activity has 4 days of slack, then ______.
a. a delay of 3 days will not have an impact b. a delay of 5 days will not have an impact c. a delay of 7 days will not have an impact d. a delay of 9 days will not have an impact
While she was 17, Trina purchases a laptop computer. Discuss the implications of her actions as to whether she can disaffirm the contract of purchase if she: (a) tries to sell the computer one year later; (b) continues to use the computer for eighteen months; or (c) has not yet made all of the payments when she turns 18, but continues to make monthly payments