AnswersIntroduction to Information Technology - EL3701Summary

Introduction Answers

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Mr. Stevens is the principal of a high school. Why might he want to export data from a database of students’ exam scores?

A
to create a presentation using other software on how students’ scores have changed throughout a semester
B
to view the student data in a new database
C
to query the database and sort students into groups according to their scores
D
to append additional student records to the database
22
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Which is an advantage of using a flat file instead of a relational database?

A
A flat file is easier to set up.
B
It is easier to assign foreign keys to a flat file.
C
A flat file reduces storage of redundant data.
D
A flat file reduces storage of irrelevant data.
23

A research firm created a survey asking city residents about building a new city park. The firm will compile the results and create a report. The firm wants to compare the number of people who support the new park to the total number who completed the survey. Which type of calculated figure should the report contain?

A
a percentage
B
a sum
C
a grand total
D
a running sum
24

Which function is best accomplished with a database?

A
storing customers’ package tracking information
B
computing the total spent on utilities in a family’s budget
C
storing students’ grades for complex calculations to be done at the end of a marking period
D
computing formulas to perform calculations to analyze data
25

What is a dynamic tool for storing, retrieving, managing, and analyzing related data?

A
a spreadsheet
B
a database
C
a network
D
a table

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