Slide 1

Tomorrow’s Technology and You

Chapter 7Databases and Privacy

© 2006 Prentice-Hall, Inc.

Slide 2

Objectives

What can we learn from Google’s history?What are some common issues raised by

modern database tools, and how can we deal with them?

What are current threats to our privacy, and what can we do about them?

© 2006 Prentice-Hall, Inc.

Slide 3

The Google Guys: Search for Successpp 233-234

Who started Google? Where did the name come from?What was new about this search engine?What is different about their company

philosophy?What else do they offer besides Web searches?What can we learn from the Google story?

© 2006 Prentice-Hall, Inc.

Slide 4

Objectives

What can we learn from Google’s history?What are some common issues raised by

modern database tools, and how can we deal with them?

What are current threats to our privacy, and what can we do about them?

© 2006 Prentice-Hall, Inc.

Slide 5

Databases - Basic Issues (p 235- 244)What is required for a successful DB?

Database Management program – such as?Storage space – how much? Query Language – such as?Form tool – what does it do? Why is it useful?

Basic TermsData Synchronization – how and why?Structure of data base

FieldRecordTable

© 2006 Prentice-Hall, Inc.

Slide 6

Relational Data base design (p245-248)

Who invented this?Goals

Eliminate data redundancy – why is this a problem? (p245)

Preserve referential integrity – what does this mean?

How does this ‘normalization’ work?Why do you need to know?All records need a primary keyAll fields in record must be attributes of the

entity represented by the primary keyLink multiple tables by use of foreign keys

© 2006 Prentice-Hall, Inc.

In-class activity• Open the Access Data Base found here • Build appropriate relationships between

the 3 tables• Build a query that will help me if I want to:

– play a game I can win– play for less than $30 – see the numbers to call for both court and

opponent

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Slide 8

More Database Issues (p 249 – 253)Choose the right tool!Plan DB contents & queries carefully!Data Decentralization

What is it?Pros and cons?

Data Miningwhat is it? examples?what problems do you see?

Other issues‘Dirty Data’ – example? solution?Inconsistent Data – example?‘Disguised’ data – example?Intelligent search engines – what might they do?

© 2006 Prentice-Hall, Inc.

Slide 9

Objectives

What can we learn from Google’s history?What are some common issues raised by

modern database tools, and how can we deal with them?

What are current threats to our privacy, and what can we do about them?

© 2006 Prentice-Hall, Inc.

Slide 10

Databases and Privacy (p 253-261)

Privacy means limits - to what? Is absolute privacy possible? desirable?“You have zero privacy anyway. Get over it.”

who said that? why? what is a ‘marketing database’ how many are you in? What can we do about this? (see p 263, 268 Proj 4)

Lack of privacy causes problems Data errors – how common? ‘Data immortality’ - problem? ‘Data insecurity’ – problem? examples of other problems?

© 2006 Prentice-Hall, Inc.

Slide 11

Databases and Privacy (p 253-261)

Workplace monitoring technologymanagers can track work habits of employees – ethical?

Surveillance cameras to detect traffic violations – pros and cons?nab criminals (combined with face recognition SW) – pros and

cons?Surveillance satellites

how good are they? how available is the data?Cell phones

now ‘locatable’ – pros and cons?On-line ‘shaming’ sites – pros and cons?

read all about it!

© 2006 Prentice-Hall, Inc.

Slide 12

What can we do? (p 256-257)

Press for Legislation What is in place in Europe? in the US? in Canada?

Safeguard your personal info – How? don’t call lists “I agree” – read policy first! What do you think of this idea? other steps?

Check info stored & get errors corrected How?You can make a difference – examples?

© 2006 Prentice-Hall, Inc.