Download Chapter 1 ACCESS (Part One)

Identify Good
Database Design
• A database is an organized collection
of data—facts about people, events,
things, or ideas—related to a specific
topic or purpose.
• Information is data that is organized
in a useful manner.
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© 2011 Pearson Education, Inc. Publishing as Prentice Hall
1
Identify Good
Database Design
• Use good design techniques when
creating a new database.
– Determine the information you want to
keep track of to create a new database.
– Ask yourself, “What questions should this
database be able to answer for me?”
– The purpose of a database is to store data
in a manner that makes it easy for you to
get the information you need.
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2
Database Structure
• An Organized collection of related
information
• Table – Vertical columns & horizontal rows
where information is stored
• Record
– A row
– Information about one person or thing
• Field
– A column
– Smallest unit of information
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Information is in the TABLE
• The basic part of a DB is called a TABLE
• A matrix of rows and columns (just like
you used in MS Excel) that contains the
data to be stored and later analyzed
• Can be created “from scratch” or
imported from some other source or
program (such as Excel)
• Columns in table define what “fields” will
be used (such as NAME, AGE, etc.)
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Data Type
• Data type defines the type of data the
field will contain
• Used to ensure right kind of data is
entered
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Data Types
Text
Number
Date/Time
Currency
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AutoNumber
Yes/No
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Four DB “objects” we will use
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Create and Use a Query,
Form, and Report
• A query is a database object that
retrieves specific data from one or
more database objects—either tables
of other queries.
• A form is an Access object with
which you can enter data, edit data,
or display data from a table or a
query.
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© 2011 Pearson Education, Inc. Publishing as Prentice Hall
8
Create and Use a Query,
Form, and Report
• A report is a database object that
displays the fields and records from
a table or a query in an easy-to-read
format suitable for printing.
• This is usually the final output to be
provided to the person who was
looking to retrieve information from
the database tables.
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© 2011 Pearson Education, Inc. Publishing as Prentice Hall
9