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Comp100 Exam 1

ANSWER KEY. Comp100 Exam 1. General Short Answer Questions 10 Points Total. Type your answers in the indicated areas. 1. What is a “relation” in database terminology? (2 pts). A table. Note that this is not the same thing as a relationship between tables. What is a “byte” ? (2 pts).

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Comp100 Exam 1

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  1. ANSWER KEY Comp100 Exam 1 General Short Answer Questions 10 Points Total Type your answers in the indicated areas.

  2. 1. What is a “relation” in database terminology? (2 pts) • A table. Note that this is not the same thing as a relationship between tables.

  3. What is a “byte” ? (2 pts) • A byte consists of 8 bits (on/off’s) and is a basic unit of measure of data. Or it is the storage of one character (one keystroke).

  4. 3. What is the difference between something that simply stores data vs. an “information system” ? (2 pts) • An information system not only stores data but also is able to retrieve the data in a form useful to the user.

  5. 4. What is “RAM” and what is it for? (2 pts) • “RAM” stands for “Random Access Memory” and is where programs and data are held in a computer when they are being used. Plus, RAM is volatile storage.

  6. 5. Why are modern computers called “digital computers”? (2 pts) • “Digital” refers to the use of ones and zeros (on vs. off) to represent data and programs within the computer. “Computer” refers to the ability of the machine to process data.

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