1. Digital Planet: Tomorrow’s Technology and You Chapter 7 Database Applications and Privacy Implications Copyright © 2012 Pearson Education, Inc. publishing as Prentice Hall

2. Google – Just One Big Database Google is one of the great success stories of the Internet. Handles hundreds of millions of queries a day Launched by two Ph.D. students 2

3. Copyright © 2012 Pearson Education, Inc. publishing as Prentice Hall What Good Is a Database? Databases make it easier to: Store large quantities of information Retrieve information quickly and flexibly Organize and reorganize information Print and distribute information in a variety of ways 3

4. Copyright © 2012 Pearson Education, Inc. publishing as Prentice Hall Database Anatomy Database: organized collection of information stored in a computer (i.e. “tables” with “fields” Database program: software tool for organizing storage and retrieval of that information 4

5. Copyright © 2012 Pearson Education, Inc. publishing as Prentice Hall Database Anatomy (cont.) Table: collection of related information Record: information related to one person, product, or event Each discrete chunk of information in a record is a field Field: holds different types of data: Numeric Date Text Computed 5

6. Copyright © 2012 Pearson Education, Inc. publishing as Prentice Hall Database Operations Input/Import: enter data in the various tables Browse: navigate through information Query: find records that match specific criteria Sort: rearrange records (alphabetically or numerically) Form: easy way to input/modify data Report: present printed output 6

7. Copyright © 2012 Pearson Education, Inc. publishing as Prentice Hall Database Operations (cont.) Structured Query Language (SQL): standard language for programming complex queries Text based command line interface Microsoft Access – graphical interface found within Microsoft Office Professional Suite 7

8. Copyright © 2012 Pearson Education, Inc. publishing as Prentice Hall Beyond the Basics: Database- Management Systems (cont.) What makes a database relational? Tables related Changes in one table reflected in other tables 8

9. Copyright © 2012 Pearson Education, Inc. publishing as Prentice Hall Database Trends Data mining: discovery of hidden predictive information Helps to predict trends and patterns in data Data warehouses: large, centralized systems housing enterprise data 9