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In: Computers and Technology

Submitted By harikishore
Words 324
Pages 2
1. Investigate data and information
Data is collected about individuals and groups by a large number of organisations and in a variety of ways.
a) Form a group of approximately four students and discuss the organisation that is allocated to you by your tutor.
b) Fill in the following table as you discuss what data is collected by the different organisation types, and how this data is used regarding individuals and groups.
c) Present your ideas to the class.
d)

Organisation Type Data collected for individual What information can be gained from this data about individuals? What information can be gained from this data about groups?
Government Departments
Passport,

Banking / Finance

Retail

Education Sector

Search Engines

Social networking sites

2. Data management

Given the file structure shown in the above Figure, answer the following questions:
a) How many records does the file contain? How many fields are there per record?

b) What problem would you encounter if you wanted to produce a listing by city? How would you solve this problem by altering the file structure?

c) If you wanted to produce a listing of the file contents by last name, area code, city, state, or zip code, how would you alter the file structure?

d) What data redundancies do you detect? How could those redundancies lead to anomalies?

3. Question(s)
a) Find definitions using your text or other appropriate source for the following and write them in your own words. Take a note of the source that you have used to find the information.
• Data
• Information
• Information systems
• Data processing
• Entity relationship diagram
b) What is the data hierarchy? Briefly explain this in your own words.
c) Briefly describe the database lifecycle.

Note: Tutorial questions will assist you in understanding the material covered and in preparation for the examination at the end of semester.

References:
Coronel, C., Morris, S. and Rob, P. (2013). Database Systems: Design Implementation, and Management. Cengage Learning.

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