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Introduction to Databases
Laurie Shteir and
Ezequiel Moctezuma
MS Access
Uses extension .mdb (multi-relational databse)
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Is a powerful database
management system
(DBMS) that functions
in the windows
environment and allows
you to create and
process data in a
database
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Key features are:
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Data entry and update
Queries (questions)
Forms
Reports
Web support
What is a Database
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Collection of all the data related to a
particular topic or purpose -- for example,
student data, customer data or product data
Structure of a Database
Records
Garner Julia
Garrett Allen
Gieger Carl
Geiser Gary
Goucher Gerard
File or Table
30 Simpson Ave
1222 Elm Street
25 West Ave
712 Chestnut
17 Asbury Ave
Fields
555-3432
555-9876
555-2702
555-1112
555-2956
Definitions
Data field is a group of related characters
Garner Julia
30 Simpson Ave
555-3432
Data Record is a group of related data fields
Garner Julia 30 Simpson Ave
555-3432
Definitions
A Database is a collection of one or more
related data files or tables
Garner Julia
30 Simpson Ave
Garrett Allen
1222 Elm Street
Gieger Carl
25 West Ave
Geiser Gary
712 Chestnut
Goucher Gerard 17 Asbury Ave
555-3432
555-9876
555-2702
555-1112
555-2956
What can I do with Database Software?
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Enter data quickly and easily
Organize records in different ways
Locate specific records quickly
Eliminate data
Connect files with related information
Create Reports
Create Queries
Data Management Software
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File Managers
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Manage data from one file (Flat File)
Data Base Management Systems
Manage data from related files; these files
are connected in some way
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Database Organization
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Hierarchical, Network, Relational and
Object-Oriented
Relational -- Collection of related tables
that share information. Most common type
of database organization
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Access is a relational database that can be
used as a file manager or a full-blown
database management system
Relational Database
Collection of related tables that can
share information. Most flexible
Sales No Territory
Sales No Name
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113
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Beller,James
Morris,Dave
Allan, Wil
Harriz,Jackie
Abelson, Mae
Stern,Joel
Other terms to know
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TableQueryField propertiesFilterRelational databaseReportDatasheet windowPrimary keyFieldFiled typesSortCriteria cell-