What are the four characteristics of a properly designed database table?
1 . The value of at least one attribute in each tuple (row) must be unique. This is the primary key.
2 . All attribute values in any column must be of the same class.
3 . Each column in a given table must be uniquely named. Different tables may contain columns with the same name.
4 . Tables must conform to the rules of normalization – free from structural dependencies, partial dependencies and transitive dependencies.
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What is the key communications principle to observe when disaster strikes?
A) Do not clam up. B) Tell everything you know. C) Create several backup stories. D) Go on the offensive.
Which of the following is a proper telephone technique?
a. answering the phone by the fifth ring. b. giving the caller the impression that you are in a hurry. c. speaking clearly and using a pleasant, friendly tone of voice. d. interrupting the caller.
The percentage of value of shipments that come from materials for the average manufacturer is:
A) greater than or equal to 40 and less than or equal to 49 percent. B) greater than or equal to 50 and less than or equal to 59 percent. C) greater than or equal to 60 and less than or equal to 69 percent. D) greater than or equal to 70 percent.
Which of the following is NOT defined as a "major life activity" by the Department of Health and Human Services:
a. running a mile in under 6 minutes b. speaking c. walking d. seeing e. all of the other specific choices are major life activities