JORGE DIAZ PORRAS,FRANCISCO GARZA,NESTOR DOMINGUEZ.
CHAPTER 8
Chapter Outline
 Lesson 8-1
 The Essentials of a database
 Lesson 8-2
 Types of Database Programs
 Lesson 8-3
 Database techniques
What is a database?
 What do the
following things have
in common: an
address book, a
telephone directory,
a list of family
birthdays, and a
catalog of DVDs? For
one thing, each can
be stored in a
database, or an
organized collection
of information.
What is a database?
 Databases can exist
on paper or on a
computer.
Computerized
databases can be
huge, containing
information on
millions of items. A
computerized
database is an idea
tool for making use
of huge amounts of
existing data.
What is database
 Databases make it easy to store, add,
organize, and retrieve information. Suppose a
worker has to find the account number for a
customer. Imagine how much time that
worker saves if he or she can find the
information simply by typing the customer’s
name instead of searching through piles of
paper!
Chapter 8-1 Vocabulary

table
 the underlying structure of a relational
database characterized by rows and columns.
record
 a part of a database that holds data about a
particular individual or item.
Vocabulary
 field
 part of a database that holds an individual




piece of data.
data type
settings applied to a database field, which
allow the field to store only information of a
specific type and/or format.
garbage in, garbage out (GIGO)
a phrase that stresses the importance of
inputting accurate data in a database.
8-2 vocabulary
 object-oriented database
 a database that stores objects, such as sound,




video, text, and graphics.
key field
an element that links tables in a relational
database.
relational database
a database in which shared key fields link
data among tables.
8-2 vocabulary
 sort
 to arrange data in a specific order.
 flat-file database
 a database that can work with only one table
at a time.
 database management system (DBMS)
 a software program used to manage the
storage, organization, processing, and
retrieval of data in a database.
Chapter 8-3
 Give examples of how to manage information
in databases.
 Compare and contrast browsing, sorting, and
querying data in a database.
 Describe the features of a report template.

Chapter 8-3
 Summarize : As you read the lesson, use a
chart to help you summarize techniques for
using databases effectively.
Chapter 8-3
 information overload
 the result of a computer user being




overwhelmed by the amount of information
generated by his or her computer
browse
to find information in a database by looking
at records one at a time
ascending order
the sorting of data by increasing value
Chapter 8-3
 descending order
 the sorting of data by decreasing value
 report
 an ordered list of selected database records
and fields in an easy-to-read format
 report template
 a pattern that controls how data will be
displayed in a database report
CHAPTER 8
How is a computerized database organized?
What do the following things have in
common: an address book, a telephone
directory, a list of family birthdays, and a
catalog of DVDs? For one thing, each can be
stored in a database, or an organized
collection of information. Databases can exist
on paper or on a computer.
Chapter 8
1.Which of the following is not a part of a
database? :worksheets
Chapter 8 answers and questions
 2.In a database, a is a unit of information
about one individual or item. :record
Chapter 8
 3. Which of the following is not an advantage
of a computerized database? :the ability to
create worksheets
Chapter 8
 4.What does the term GIGO stand for? :
 garbage in, garbage out
Chapter 8
5.Which type of database allows you to
work with data in only one table?
Chapter 8
 6.
This kind of database can be used to
store all kinds of items, such as
documents or video clips. :objectoriented database
Chapter 8
 7.The same
in multiple tables requires the
computer to store more information and
increases the chance of errors. :data
Chapter 8
 8.This means finding data by looking at all the
records in a database. :browsing
Chapter 8
 9. If you sort data in order of increasing value,
such as A–Z or 1–9, what sort order are you
using? :ascending
Chapter 8
 10. This is a user-created direction that tells
the database to find specific records. :query